4 * Version of this script. If the server returns a version larger than
5 * this, it is a sign we should reload to upgrade ourselves.
10 var SCRIPT_VERSION = 2021021300;
13 * The current backend URL.
18 var backend_url = "/analysis.pl";
19 var backend_hash_url = "/hash";
21 /** @type {window.ChessBoard} @private */
24 /** @type {boolean} @private */
25 var board_is_animating = false;
28 * The most recent analysis data we have from the server
29 * (about the most recent position).
33 var current_analysis_data = null;
36 * If we are displaying previous analysis or from hash, this is non-null,
37 * and will override most of current_analysis_data.
42 var displayed_analysis_data = null;
45 * Games currently in progress, if any.
57 var current_games = null;
72 /** @type {Array.<Array.<boolean>>} */
73 var occupied_by_arrows = [];
75 /** Currently displayed refutation lines (on-screen).
76 * Can either come from the current_analysis_data, displayed_analysis_data,
77 * or hash_refutation_lines.
79 var refutation_lines = [];
81 /** Refutation lines from current hash probe.
83 * If non-null, will override refutation lines from the base position.
84 * Note that these are relative to display_fen, not base_fen.
86 var hash_refutation_lines = null;
88 /** @type {!number} @private */
91 /** @type {!string} @private */
94 /** @type {number} @private */
97 /** @type {boolean} @private */
98 var truncate_display_history = true;
100 /** @type {!string|undefined} @private */
101 var highlight_from = undefined;
103 /** @type {!string|undefined} @private */
104 var highlight_to = undefined;
106 /** The HTML object of the move currently being highlighted (in red).
109 var highlighted_move = null;
111 /** Currently suggested/recommended move when dragging.
112 * @type {?{from: !string, to: !string}}
115 var recommended_move = null;
117 /** If reverse-dragging (dragging from the destination square to the
118 * source square), the destination square.
122 var reverse_dragging_from = null;
124 /** @type {?number} @private */
127 /** @type {boolean} @private */
128 var enable_sound = false;
131 * Our best estimate of how many milliseconds we need to add to
132 * new Date() to get the true UTC time. Calibrated against the
138 var client_clock_offset_ms = null;
140 var clock_timer = null;
142 /** The current position being analyzed, represented as a FEN string.
143 * Note that this is not necessarily the same as display_fen.
149 /** The current position on the board, represented as a FEN string.
150 * Note that board.fen() does not contain e.g. who is to play.
154 var display_fen = null;
158 * pv: Array.<string>,
161 * scores: Array<{first_move: number, score: Object}>,
162 * start_display_move_num: number
165 * "start_display_move_num" is the (half-)move number to start displaying the PV at.
166 * "score" is also evaluated at this point.
169 /** All PVs that we currently know of.
171 * Element 0 is history (or null if no history).
172 * Element 1 is current main PV, or explored line if nowhere else on the screen.
173 * All remaining elements are refutation lines (multi-PV).
175 * @type {Array.<DisplayLine>}
178 var display_lines = [];
180 /** @type {?DisplayLine} @private */
181 var current_display_line = null;
183 /** @type {boolean} @private */
184 var current_display_line_is_history = false;
186 /** @type {?number} @private */
187 var current_display_move = null;
190 * The current backend request to get main analysis (not history), if any,
191 * so that we can abort it.
196 var current_analysis_xhr = null;
199 * The current timer to fire off a request to get main analysis (not history),
200 * if any, so that we can abort it.
205 var current_analysis_request_timer = null;
208 * The current backend request to get historic data, if any.
213 var current_historic_xhr = null;
216 * The current backend request to get hash probes, if any, so that we can abort it.
221 var current_hash_xhr = null;
224 * The current timer to display hash probe information (it could be waiting on the
225 * board to stop animating), if any, so that we can abort it.
230 var current_hash_display_timer = null;
232 var supports_html5_storage = function() {
234 return 'localStorage' in window && window['localStorage'] !== null;
240 // Make the unique token persistent so people refreshing the page won't count twice.
241 // Of course, you can never fully protect against people deliberately wanting to spam.
242 var get_unique = function() {
243 var use_local_storage = supports_html5_storage();
244 if (use_local_storage && localStorage['unique']) {
245 return localStorage['unique'];
247 var unique = Math.random();
248 if (use_local_storage) {
249 localStorage['unique'] = unique;
254 var request_update = function() {
255 current_analysis_request_timer = null;
257 current_analysis_xhr = $.ajax({
258 url: backend_url + "?ims=" + ims + "&unique=" + unique
259 }).done(function(data, textstatus, xhr) {
260 sync_server_clock(xhr.getResponseHeader('Date'));
261 ims = xhr.getResponseHeader('X-RGLM');
262 var num_viewers = xhr.getResponseHeader('X-RGNV');
264 if (Array.isArray(data)) {
265 new_data = JSON.parse(JSON.stringify(current_analysis_data));
266 JSON_delta.patch(new_data, data);
271 var minimum_version = xhr.getResponseHeader('X-RGMV');
272 if (minimum_version && minimum_version > SCRIPT_VERSION) {
273 // Upgrade to latest version with a force-reload.
274 location.reload(true);
277 // Verify that the PV makes sense.
279 if (new_data['pv']) {
280 var hiddenboard = new Chess(new_data['position']['fen']);
281 for (var i = 0; i < new_data['pv'].length; ++i) {
282 if (hiddenboard.move(new_data['pv'][i]) === null) {
291 possibly_play_sound(current_analysis_data, new_data);
292 current_analysis_data = new_data;
294 update_num_viewers(num_viewers);
296 console.log("Received invalid update, waiting five seconds and trying again.");
297 setTimeout(function() { location.reload(true); }, 5000);
301 if (!backend_url.match(/history/)) {
302 current_analysis_request_timer = setTimeout(function() { request_update(); }, timeout);
304 }).fail(function(jqXHR, textStatus, errorThrown) {
305 document.body.style.opacity = null;
306 if (textStatus === "abort") {
307 // Aborted because we are switching backends. Abandon and don't retry,
308 // because another one is already started for us.
310 // Backend error or similar. Wait ten seconds, then try again.
311 current_analysis_request_timer = setTimeout(function() { request_update(); }, 10000);
316 var possibly_play_sound = function(old_data, new_data) {
320 if (old_data === null) {
323 var ding = document.getElementById('ding');
324 if (ding && ding.play) {
325 if (old_data['position'] && old_data['position']['fen'] &&
326 new_data['position'] && new_data['position']['fen'] &&
327 (old_data['position']['fen'] !== new_data['position']['fen'] ||
328 old_data['position']['move_num'] !== new_data['position']['move_num'])) {
335 * @type {!string} server_date_string
337 var sync_server_clock = function(server_date_string) {
338 var server_time_ms = new Date(server_date_string).getTime();
339 var client_time_ms = new Date().getTime();
340 var estimated_offset_ms = server_time_ms - client_time_ms;
342 // In order not to let the noise move us too much back and forth
343 // (the server only has one-second resolution anyway), we only
344 // change an existing skew if we are at least five seconds off.
345 if (client_clock_offset_ms === null ||
346 Math.abs(estimated_offset_ms - client_clock_offset_ms) > 5000) {
347 client_clock_offset_ms = estimated_offset_ms;
351 var clear_arrows = function() {
352 for (var i = 0; i < arrows.length; ++i) {
354 if (arrows[i].svg.parentElement) {
355 arrows[i].svg.parentElement.removeChild(arrows[i].svg);
357 delete arrows[i].svg;
362 occupied_by_arrows = [];
363 for (var y = 0; y < 8; ++y) {
364 occupied_by_arrows.push([false, false, false, false, false, false, false, false]);
368 var redraw_arrows = function() {
369 for (var i = 0; i < arrows.length; ++i) {
370 position_arrow(arrows[i]);
374 /** @param {!number} x
377 var sign = function(x) {
387 /** See if drawing this arrow on the board would cause unduly amount of confusion.
388 * @param {!string} from The square the arrow is from (e.g. e4).
389 * @param {!string} to The square the arrow is to (e.g. e4).
392 var interfering_arrow = function(from, to) {
393 var from_col = from.charCodeAt(0) - "a1".charCodeAt(0);
394 var from_row = from.charCodeAt(1) - "a1".charCodeAt(1);
395 var to_col = to.charCodeAt(0) - "a1".charCodeAt(0);
396 var to_row = to.charCodeAt(1) - "a1".charCodeAt(1);
398 occupied_by_arrows[from_row][from_col] = true;
400 // Knight move: Just check that we haven't been at the destination before.
401 if ((Math.abs(to_col - from_col) == 2 && Math.abs(to_row - from_row) == 1) ||
402 (Math.abs(to_col - from_col) == 1 && Math.abs(to_row - from_row) == 2)) {
403 return occupied_by_arrows[to_row][to_col];
406 // Sliding piece: Check if anything except the from-square is seen before.
407 var dx = sign(to_col - from_col);
408 var dy = sign(to_row - from_row);
414 if (occupied_by_arrows[y][x]) {
417 occupied_by_arrows[y][x] = true;
418 } while (x != to_col || y != to_row);
423 /** Find a point along the coordinate system given by the given line,
424 * <t> units forward from the start of the line, <u> units to the right of it.
425 * @param {!number} x1
426 * @param {!number} x2
427 * @param {!number} y1
428 * @param {!number} y2
431 * @return {!string} The point in "x y" form, suitable for SVG paths.
433 var point_from_start = function(x1, y1, x2, y2, t, u) {
437 var norm = 1.0 / Math.sqrt(dx * dx + dy * dy);
441 var x = x1 + dx * t + dy * u;
442 var y = y1 + dy * t - dx * u;
446 /** Find a point along the coordinate system given by the given line,
447 * <t> units forward from the end of the line, <u> units to the right of it.
448 * @param {!number} x1
449 * @param {!number} x2
450 * @param {!number} y1
451 * @param {!number} y2
454 * @return {!string} The point in "x y" form, suitable for SVG paths.
456 var point_from_end = function(x1, y1, x2, y2, t, u) {
460 var norm = 1.0 / Math.sqrt(dx * dx + dy * dy);
464 var x = x2 + dx * t + dy * u;
465 var y = y2 + dy * t - dx * u;
469 var position_arrow = function(arrow) {
471 if (arrow.svg.parentElement) {
472 arrow.svg.parentElement.removeChild(arrow.svg);
476 if (current_display_line !== null && !current_display_line_is_history) {
480 var zoom_factor = $("#board").width() / 400.0;
481 var line_width = arrow.line_width * zoom_factor;
482 var arrow_size = arrow.arrow_size * zoom_factor;
484 var square_width = $(".square-a8").width();
485 var pos, from_y, to_y, from_x, to_x;
486 if (board.orientation() === 'black') {
487 pos = $(".square-h1").position();
488 from_y = (arrow.from_row + 0.5)*square_width;
489 to_y = (arrow.to_row + 0.5)*square_width;
490 from_x = (7 - arrow.from_col + 0.5)*square_width;
491 to_x = (7 - arrow.to_col + 0.5)*square_width;
493 pos = $(".square-a8").position();
494 from_y = (7 - arrow.from_row + 0.5)*square_width;
495 to_y = (7 - arrow.to_row + 0.5)*square_width;
496 from_x = (arrow.from_col + 0.5)*square_width;
497 to_x = (arrow.to_col + 0.5)*square_width;
500 var SVG_NS = "http://www.w3.org/2000/svg";
501 var XHTML_NS = "http://www.w3.org/1999/xhtml";
502 var svg = document.createElementNS(SVG_NS, "svg");
503 svg.setAttribute("width", /** @type{number} */ ($("#board").width()));
504 svg.setAttribute("height", /** @type{number} */ ($("#board").height()));
505 svg.setAttribute("style", "position: absolute");
506 svg.setAttribute("position", "absolute");
507 svg.setAttribute("version", "1.1");
508 svg.setAttribute("class", "c1");
509 svg.setAttribute("xmlns", XHTML_NS);
517 var outline = document.createElementNS(SVG_NS, "path");
518 outline.setAttribute("d", "M " + point_from_start(x1, y1, x2, y2, arrow_size / 2, 0) + " L " + point_from_end(x1, y1, x2, y2, -arrow_size / 2, 0));
519 outline.setAttribute("xmlns", XHTML_NS);
520 outline.setAttribute("stroke", "#666");
521 outline.setAttribute("stroke-width", line_width + 2);
522 outline.setAttribute("fill", "none");
523 svg.appendChild(outline);
525 var path = document.createElementNS(SVG_NS, "path");
526 path.setAttribute("d", "M " + point_from_start(x1, y1, x2, y2, arrow_size / 2, 0) + " L " + point_from_end(x1, y1, x2, y2, -arrow_size / 2, 0));
527 path.setAttribute("xmlns", XHTML_NS);
528 path.setAttribute("stroke", arrow.fg_color);
529 path.setAttribute("stroke-width", line_width);
530 path.setAttribute("fill", "none");
531 svg.appendChild(path);
533 // Then the arrow head.
534 var head = document.createElementNS(SVG_NS, "path");
535 head.setAttribute("d",
536 "M " + point_from_end(x1, y1, x2, y2, 0, 0) +
537 " L " + point_from_end(x1, y1, x2, y2, -arrow_size, -arrow_size / 2) +
538 " L " + point_from_end(x1, y1, x2, y2, -arrow_size * .623, 0.0) +
539 " L " + point_from_end(x1, y1, x2, y2, -arrow_size, arrow_size / 2) +
540 " L " + point_from_end(x1, y1, x2, y2, 0, 0));
541 head.setAttribute("xmlns", XHTML_NS);
542 head.setAttribute("stroke", "#000");
543 head.setAttribute("stroke-width", "1");
544 head.setAttribute("fill", arrow.fg_color);
545 svg.appendChild(head);
547 $(svg).css({ top: pos.top, left: pos.left, 'pointer-events': 'none' });
548 document.body.appendChild(svg);
553 * @param {!string} from_square
554 * @param {!string} to_square
555 * @param {!string} fg_color
556 * @param {number} line_width
557 * @param {number} arrow_size
559 var create_arrow = function(from_square, to_square, fg_color, line_width, arrow_size) {
560 var from_col = from_square.charCodeAt(0) - "a1".charCodeAt(0);
561 var from_row = from_square.charCodeAt(1) - "a1".charCodeAt(1);
562 var to_col = to_square.charCodeAt(0) - "a1".charCodeAt(0);
563 var to_row = to_square.charCodeAt(1) - "a1".charCodeAt(1);
571 line_width: line_width,
572 arrow_size: arrow_size,
576 position_arrow(arrow);
580 var compare_by_score = function(refutation_lines, invert, a, b) {
581 var sa = compute_score_sort_key(refutation_lines[b]['score'], refutation_lines[b]['depth'], invert);
582 var sb = compute_score_sort_key(refutation_lines[a]['score'], refutation_lines[a]['depth'], invert);
587 * Fake multi-PV using the refutation lines. Find all “relevant” moves,
588 * sorted by quality, descending.
590 * @param {!Object} data
591 * @param {number} margin The maximum number of centipawns worse than the
592 * best move can be and still be included.
593 * @param {boolean} invert Whether black is to play.
594 * @return {Array.<string>} The FEN representation (e.g. Ne4) of all
595 * moves, in score order.
597 var find_nonstupid_moves = function(data, margin, invert) {
598 // First of all, if there are any moves that are more than 0.5 ahead of
599 // the primary move, the refutation lines are probably bunk, so just
601 var best_score = undefined;
602 var pv_score = undefined;
603 for (var move in data['refutation_lines']) {
604 var line = data['refutation_lines'][move];
605 var score = compute_score_sort_key(line['score'], line['depth'], invert, false);
606 if (move == data['pv'][0]) {
609 if (best_score === undefined || score > best_score) {
612 if (line['depth'] < 8) {
617 if (best_score - pv_score > 50) {
621 // Now find all moves that are within “margin” of the best score.
622 // The PV move will always be first.
624 for (var move in data['refutation_lines']) {
625 var line = data['refutation_lines'][move];
626 var score = compute_score_sort_key(line['score'], line['depth'], invert);
627 if (move != data['pv'][0] && best_score - score <= margin) {
631 moves = moves.sort(function(a, b) { return compare_by_score(data['refutation_lines'], data['position']['toplay'] === 'B', a, b) });
632 moves.unshift(data['pv'][0]);
641 var thousands = function(x) {
642 return String(x).split('').reverse().join('').replace(/(\d{3}\B)/g, '$1,').split('').reverse().join('');
646 * @param {!string} start_fen
647 * @param {Array.<string>} pv
648 * @param {number} move_num
649 * @param {!string} toplay
650 * @param {Array<{ first_move: integer, score: Object }>} scores
651 * @param {number} start_display_move_num
652 * @param {number=} opt_limit
653 * @param {boolean=} opt_showlast
655 var add_pv = function(start_fen, pv, move_num, toplay, scores, start_display_move_num, opt_limit, opt_showlast) {
657 start_fen: start_fen,
659 move_num: parseInt(move_num),
662 start_display_move_num: start_display_move_num
664 var splicepos = null;
665 if (scores !== null && scores.length >= 1 &&
666 scores[scores.length - 1].score !== undefined &&
667 scores[scores.length - 1].score !== null &&
668 (scores[scores.length - 1].score[0] === 'T' ||
669 scores[scores.length - 1].score[0] === 't')) {
670 splicepos = scores[scores.length - 1].score[1];
672 return print_pv(display_lines.length - 1, splicepos, opt_limit, opt_showlast);
676 * @param {number} line_num
677 * @param {?number} splicepos If non-null, where the tablebase-spliced portion of the TB starts.
678 * @param {number=} opt_limit If set, show at most this number of moves.
679 * @param {boolean=} opt_showlast If limit is set, show the last moves instead of the first ones.
681 var print_pv = function(line_num, splicepos, opt_limit, opt_showlast) {
682 var display_line = display_lines[line_num];
683 var pv = display_line.pv;
684 var move_num = display_line.move_num;
685 var toplay = display_line.toplay;
687 // Truncate PV at the start if needed.
688 var start_display_move_num = display_line.start_display_move_num;
689 if (start_display_move_num > 0) {
690 pv = pv.slice(start_display_move_num);
691 var to_add = start_display_move_num;
692 if (toplay === 'B') {
697 if (to_add % 2 == 1) {
701 move_num += to_add / 2;
702 if (splicepos !== null && splicepos > 0) {
710 if (opt_limit && opt_showlast && pv.length > opt_limit) {
711 // Truncate the PV at the beginning (instead of at the end).
712 // We assume here that toplay is 'W'. We also assume that if
713 // opt_showlast is set, then it is the history, and thus,
714 // the UI should be to expand the history.
715 ret = '(<a class="move" href="javascript:collapse_history(false)">…</a>) ';
716 i = pv.length - opt_limit;
721 } else if (toplay == 'B' && pv.length > 0) {
723 if (splicepos === 0) {
727 move += "<a class=\"move\" id=\"automove" + line_num + "-0\" href=\"javascript:show_line(" + line_num + ", " + 0 + ");\">" + pv[0] + "</a>";
728 ret = move_num + '. … ' + move;
733 for ( ; i < pv.length; ++i) {
734 var move = "<a class=\"move\" id=\"automove" + line_num + "-" + i + "\" href=\"javascript:show_line(" + line_num + ", " + i + ");\">" + pv[i] + "</a>";
735 if (splicepos === i) {
741 if (i > opt_limit && !opt_showlast) {
750 ret += move_num + '. ' + move;
764 /** Update the highlighted to/from squares on the board.
765 * Based on the global "highlight_from" and "highlight_to" variables.
767 var update_board_highlight = function() {
768 $("#board").find('.square-55d63').removeClass('nonuglyhighlight');
769 if ((current_display_line === null || current_display_line_is_history) &&
770 highlight_from !== undefined && highlight_to !== undefined) {
771 $("#board").find('.square-' + highlight_from).addClass('nonuglyhighlight');
772 $("#board").find('.square-' + highlight_to).addClass('nonuglyhighlight');
776 var update_history = function() {
777 if (display_lines[0] === null || display_lines[0].pv.length == 0) {
778 $("#history").html("No history");
779 } else if (truncate_display_history) {
780 $("#history").html(print_pv(0, null, 8, true));
783 '(<a class="move" href="javascript:collapse_history(true)">collapse</a>) ' +
789 * @param {!boolean} truncate_history
791 var collapse_history = function(truncate_history) {
792 truncate_display_history = truncate_history;
795 window['collapse_history'] = collapse_history;
797 /** Update the HTML display of multi-PV from the global "refutation_lines".
799 * Also recreates the global "display_lines".
801 var update_refutation_lines = function() {
802 if (base_fen === null) {
805 if (display_lines.length > 2) {
806 // Truncate so that only the history and PV is left.
807 display_lines = [ display_lines[0], display_lines[1] ];
809 var tbl = $("#refutationlines");
812 if (display_lines.length < 2) {
816 // Find out where the lines start from.
818 var base_scores = display_lines[1].scores;
819 var start_display_move_num = 0;
820 if (hash_refutation_lines) {
821 base_line = current_display_line.pv.slice(0, current_display_move + 1);
822 base_scores = current_display_line.scores;
823 start_display_move_num = base_line.length;
827 for (var move in refutation_lines) {
831 var invert = (toplay === 'B');
832 if (current_display_line && current_display_move % 2 == 0 && !current_display_line_is_history) {
835 moves = moves.sort(function(a, b) { return compare_by_score(refutation_lines, invert, a, b) });
836 for (var i = 0; i < moves.length; ++i) {
837 var line = refutation_lines[moves[i]];
839 var tr = document.createElement("tr");
841 var move_td = document.createElement("td");
842 tr.appendChild(move_td);
843 $(move_td).addClass("move");
845 var scores = base_scores.concat([{ first_move: start_display_move_num, score: line['score'] }]);
847 if (line['pv'].length == 0) {
848 // Not found, so just make a one-move PV.
849 var move = "<a class=\"move\" href=\"javascript:show_line(" + display_lines.length + ", " + 0 + ");\">" + line['move'] + "</a>";
850 $(move_td).html(move);
851 var score_td = document.createElement("td");
853 $(score_td).addClass("score");
854 $(score_td).text("—");
855 tr.appendChild(score_td);
857 var depth_td = document.createElement("td");
858 tr.appendChild(depth_td);
859 $(depth_td).addClass("depth");
860 $(depth_td).text("—");
862 var pv_td = document.createElement("td");
863 tr.appendChild(pv_td);
864 $(pv_td).addClass("pv");
865 $(pv_td).html(add_pv(base_fen, base_line.concat([ line['move'] ]), move_num, toplay, scores, start_display_move_num));
871 var move = "<a class=\"move\" href=\"javascript:show_line(" + display_lines.length + ", " + 0 + ");\">" + line['move'] + "</a>";
872 $(move_td).html(move);
874 var score_td = document.createElement("td");
875 tr.appendChild(score_td);
876 $(score_td).addClass("score");
877 $(score_td).text(format_short_score(line['score']));
879 var depth_td = document.createElement("td");
880 tr.appendChild(depth_td);
881 $(depth_td).addClass("depth");
882 if (line['depth'] && line['depth'] >= 0) {
883 $(depth_td).text("d" + line['depth']);
885 $(depth_td).text("—");
888 var pv_td = document.createElement("td");
889 tr.appendChild(pv_td);
890 $(pv_td).addClass("pv");
891 $(pv_td).html(add_pv(base_fen, base_line.concat(line['pv']), move_num, toplay, scores, start_display_move_num, 10));
896 // Update the move highlight, as we've rewritten all the HTML.
897 update_move_highlight();
901 * Create a Chess.js board object, containing the given position plus the given moves,
902 * up to the given limit.
904 * @param {?string} fen
905 * @param {Array.<string>} moves
906 * @param {number} last_move
908 var chess_from = function(fen, moves, last_move) {
909 var hiddenboard = new Chess();
910 if (fen !== null && fen !== undefined) {
911 hiddenboard.load(fen);
913 for (var i = 0; i <= last_move; ++i) {
914 if (moves[i] === '0-0') {
915 hiddenboard.move('O-O');
916 } else if (moves[i] === '0-0-0') {
917 hiddenboard.move('O-O-O');
919 hiddenboard.move(moves[i]);
925 var update_game_list = function(games) {
926 $("#games").text("");
927 if (games === null) {
931 var games_div = document.getElementById('games');
932 for (var game_num = 0; game_num < games.length; ++game_num) {
933 var game = games[game_num];
934 var game_span = document.createElement("span");
935 game_span.setAttribute("class", "game");
937 var game_name = document.createTextNode(game['name']);
938 if (game['url'] === backend_url) {
940 game_span.appendChild(game_name);
942 if (current_analysis_data && current_analysis_data['position']) {
944 if (current_analysis_data['position']['result']) {
945 score = " (" + current_analysis_data['position']['result'] + ")";
947 score = " (" + format_short_score(current_analysis_data['score']) + ")";
949 game_span.appendChild(document.createTextNode(score));
953 var game_a = document.createElement("a");
954 game_a.setAttribute("href", "#" + game['id']);
955 game_a.appendChild(game_name);
956 game_span.appendChild(game_a);
959 if (game['result']) {
960 score = " (" + game['result'] + ")";
962 score = " (" + format_short_score(game['score']) + ")";
964 game_span.appendChild(document.createTextNode(score));
967 games_div.appendChild(game_span);
972 * Try to find a running game that matches with the current hash,
973 * and switch to it if we're not already displaying it.
975 var possibly_switch_game_from_hash = function() {
976 var history_match = window.location.hash.match(/^#history=([a-zA-Z0-9_-]+)/);
977 if (history_match !== null) {
978 var game_id = history_match[1];
980 url: '/history/' + game_id + '.json',
982 id: 'history=' + game_id
984 switch_backend(fake_game);
988 if (current_games === null) {
992 var hash = window.location.hash.replace(/^#/,'');
993 for (var i = 0; i < current_games.length; ++i) {
994 if (current_games[i]['id'] === hash) {
995 if (backend_url !== current_games[i]['url']) {
996 switch_backend(current_games[i]);
1004 * If this is a Chess960 castling which doesn't move the king,
1005 * move the rook instead.
1007 var patch_move = function(move) {
1008 if (move === null) return null;
1009 if (move.from !== move.to) return move;
1011 var f = move.rook_sq & 15;
1012 var r = move.rook_sq >> 4;
1013 var from = ('abcdefgh'.substring(f,f+1) + '87654321'.substring(r,r+1));
1016 if (move.to === 'g1') {
1018 } else if (move.to === 'g8') {
1020 } else if (move.to === 'b1') {
1022 } else if (move.to === 'b8') {
1026 return { from: from, to: to };
1029 /** Update all the HTML on the page, based on current global state.
1031 var update_board = function() {
1032 document.body.style.opacity = null;
1034 var data = displayed_analysis_data || current_analysis_data;
1035 var current_data = current_analysis_data; // Convenience alias.
1039 // Print the history. This is pretty much the only thing that's
1040 // unconditionally taken from current_data (we're not interested in
1041 // historic history).
1042 if (current_data['position']['history']) {
1043 var start = (current_data['position'] && current_data['position']['start_fen']) ? current_data['position']['start_fen'] : 'start';
1044 add_pv(start, current_data['position']['history'], 1, 'W', null, 0, 8, true);
1046 display_lines.push(null);
1050 // Games currently in progress, if any.
1051 if (current_data['games']) {
1052 current_games = current_data['games'];
1053 possibly_switch_game_from_hash();
1055 current_games = null;
1057 update_game_list(current_games);
1059 // The headline. Names are always fetched from current_data;
1060 // the rest can depend a bit.
1063 current_data['position']['player_w'] && current_data['position']['player_b']) {
1064 headline = current_data['position']['player_w'] + '–' +
1065 current_data['position']['player_b'] + ', analysis';
1067 headline = 'Analysis';
1070 // Credits, where applicable. Note that we don't want the footer to change a lot
1071 // when e.g. viewing history, so if any of these changed during the game,
1072 // use the current one still.
1073 if (current_data['using_lomonosov']) {
1074 $("#lomonosov").show();
1076 $("#lomonosov").hide();
1079 // Credits: The engine name/version.
1080 if (current_data['engine'] && current_data['engine']['name'] !== null) {
1081 $("#engineid").text(current_data['engine']['name']);
1084 // Credits: The engine URL.
1085 if (current_data['engine'] && current_data['engine']['url']) {
1086 $("#engineid").attr("href", current_data['engine']['url']);
1088 $("#engineid").removeAttr("href");
1091 // Credits: Engine details.
1092 if (current_data['engine'] && current_data['engine']['details']) {
1093 $("#enginedetails").text(" (" + current_data['engine']['details'] + ")");
1095 $("#enginedetails").text("");
1098 // Credits: Move source, possibly with URL.
1099 if (current_data['move_source'] && current_data['move_source_url']) {
1100 $("#movesource").text("Moves provided by ");
1101 var movesource_a = document.createElement("a");
1102 movesource_a.setAttribute("href", current_data['move_source_url']);
1103 var movesource_text = document.createTextNode(current_data['move_source']);
1104 movesource_a.appendChild(movesource_text);
1105 var movesource_period = document.createTextNode(".");
1106 document.getElementById("movesource").appendChild(movesource_a);
1107 document.getElementById("movesource").appendChild(movesource_period);
1108 } else if (current_data['move_source']) {
1109 $("#movesource").text("Moves provided by " + current_data['move_source'] + ".");
1111 $("#movesource").text("");
1115 if (displayed_analysis_data) {
1116 // Displaying some non-current position, pick out the last move
1117 // from the history. This will work even if the fetch failed.
1118 if (current_display_move !== -1) {
1119 last_move = format_halfmove_with_number(
1120 current_display_line.pv[current_display_move],
1121 current_display_move);
1122 headline += ' after ' + last_move;
1124 } else if (data['position']['last_move'] !== 'none') {
1125 // Find the previous move.
1126 var previous_move_num, previous_toplay;
1127 if (data['position']['toplay'] == 'B') {
1128 previous_move_num = data['position']['move_num'];
1129 previous_toplay = 'W';
1131 previous_move_num = data['position']['move_num'] - 1;
1132 previous_toplay = 'B';
1135 last_move = format_move_with_number(
1136 data['position']['last_move'],
1138 previous_toplay == 'W');
1139 headline += ' after ' + last_move;
1143 $("#headline").text(headline);
1145 // The <title> contains a very brief headline.
1146 var title_elems = [];
1147 if (data['position'] && data['position']['result']) {
1148 title_elems.push(data['position']['result']);
1149 } else if (data['score']) {
1150 title_elems.push(format_short_score(data['score']));
1152 if (last_move !== null) {
1153 title_elems.push(last_move);
1156 if (title_elems.length != 0) {
1157 document.title = '(' + title_elems.join(', ') + ') analysis.sesse.net';
1159 document.title = 'analysis.sesse.net';
1162 // The last move (shown by highlighting the from and to squares).
1163 if (data['position'] && data['position']['last_move_uci']) {
1164 highlight_from = data['position']['last_move_uci'].substr(0, 2);
1165 highlight_to = data['position']['last_move_uci'].substr(2, 2);
1166 } else if (current_display_line_is_history && current_display_line && current_display_move >= 0) {
1167 // We don't have historic analysis for this position, but we
1168 // can reconstruct what the last move was by just replaying
1170 var position = (data['position'] && data['position']['start_fen']) ? data['position']['start_fen'] : null;
1171 var hiddenboard = chess_from(position, current_display_line.pv, current_display_move);
1172 var moves = hiddenboard.history({ verbose: true });
1173 last_move = moves.pop();
1174 highlight_from = last_move.from;
1175 highlight_to = last_move.to;
1177 highlight_from = highlight_to = undefined;
1179 update_board_highlight();
1181 if (data['failed']) {
1182 $("#score").text("No analysis for this move");
1183 $("#pvtitle").text("PV:");
1185 $("#searchstats").html(" ");
1186 $("#refutationlines").empty();
1187 $("#whiteclock").empty();
1188 $("#blackclock").empty();
1189 refutation_lines = [];
1190 update_refutation_lines();
1192 update_displayed_line();
1193 update_move_highlight();
1200 if (current_display_line && !current_display_line_is_history) {
1202 if (current_display_line.scores && current_display_line.scores.length > 0) {
1203 for (var i = 0; i < current_display_line.scores.length; ++i) {
1204 if (current_display_move < current_display_line.scores[i].first_move) {
1207 score = current_display_line.scores[i].score;
1211 $("#score").text(format_long_score(score));
1213 $("#score").text("No score for this line");
1215 } else if (data['score']) {
1216 $("#score").text(format_long_score(data['score']));
1219 // The search stats.
1220 if (data['searchstats']) {
1221 $("#searchstats").html(data['searchstats']);
1222 } else if (data['tablebase'] == 1) {
1223 $("#searchstats").text("Tablebase result");
1224 } else if (data['nodes'] && data['nps'] && data['depth']) {
1225 var stats = thousands(data['nodes']) + ' nodes, ' + thousands(data['nps']) + ' nodes/sec, depth ' + data['depth'] + ' ply';
1226 if (data['seldepth']) {
1227 stats += ' (' + data['seldepth'] + ' selective)';
1229 if (data['tbhits'] && data['tbhits'] > 0) {
1230 if (data['tbhits'] == 1) {
1231 stats += ', one Syzygy hit';
1233 stats += ', ' + thousands(data['tbhits']) + ' Syzygy hits';
1237 $("#searchstats").text(stats);
1239 $("#searchstats").text("");
1242 // Update the board itself.
1243 base_fen = data['position']['fen'];
1244 update_displayed_line();
1247 $("#pvtitle").text("PV:");
1249 var scores = [{ first_move: -1, score: data['score'] }];
1250 $("#pv").html(add_pv(data['position']['fen'], data['pv'], data['position']['move_num'], data['position']['toplay'], scores, 0));
1252 // Update the PV arrow.
1254 if (data['pv'].length >= 1) {
1255 var hiddenboard = new Chess(base_fen);
1257 // draw a continuation arrow as long as it's the same piece
1259 for (var i = 0; i < data['pv'].length; i += 2) {
1260 var move = patch_move(hiddenboard.move(data['pv'][i]));
1262 if ((i >= 2 && move.from != last_to) ||
1263 interfering_arrow(move.from, move.to)) {
1266 create_arrow(move.from, move.to, '#f66', 6, 20);
1268 hiddenboard.move(data['pv'][i + 1]); // To keep continuity.
1271 var alt_moves = find_nonstupid_moves(data, 30, data['position']['toplay'] === 'B');
1272 for (var i = 1; i < alt_moves.length && i < 3; ++i) {
1273 hiddenboard = new Chess(base_fen);
1274 var move = patch_move(hiddenboard.move(alt_moves[i]));
1275 if (move !== null) {
1276 create_arrow(move.from, move.to, '#f66', 1, 10);
1281 // See if all semi-reasonable moves have only one possible response.
1282 if (data['pv'].length >= 2) {
1283 var nonstupid_moves = find_nonstupid_moves(data, 300, data['position']['toplay'] === 'B');
1286 var hiddenboard = new Chess(base_fen);
1287 hiddenboard.move(data['pv'][0]);
1288 response = hiddenboard.move(data['pv'][1]);
1290 for (var i = 0; i < nonstupid_moves.length; ++i) {
1291 if (nonstupid_moves[i] == data['pv'][0]) {
1292 // ignore the PV move for refutation lines.
1295 if (!data['refutation_lines'] ||
1296 !data['refutation_lines'][nonstupid_moves[i]] ||
1297 !data['refutation_lines'][nonstupid_moves[i]]['pv'] ||
1298 data['refutation_lines'][nonstupid_moves[i]]['pv'].length < 2) {
1299 // Incomplete PV, abort.
1300 response = undefined;
1303 var line = data['refutation_lines'][nonstupid_moves[i]];
1304 hiddenboard = new Chess(base_fen);
1305 hiddenboard.move(line['pv'][0]);
1306 var this_response = hiddenboard.move(line['pv'][1]);
1307 if (this_response === null) {
1308 console.log("BUG: ", i);
1310 console.log(line['pv']);
1312 if (response.from !== this_response.from || response.to !== this_response.to) {
1313 // Different response depending on lines, abort.
1314 response = undefined;
1319 if (nonstupid_moves.length > 0 && response !== undefined) {
1320 create_arrow(response.from, response.to, '#66f', 6, 20);
1324 // Update the refutation lines.
1325 base_fen = data['position']['fen'];
1326 move_num = parseInt(data['position']['move_num']);
1327 toplay = data['position']['toplay'];
1328 refutation_lines = hash_refutation_lines || data['refutation_lines'];
1329 update_refutation_lines();
1331 // Update the sparkline last, since its size depends on how everything else reflowed.
1332 update_sparkline(data);
1335 var update_sparkline = function(data) {
1336 if (data && data['score_history']) {
1337 var first_move_num = undefined;
1338 for (var halfmove_num in data['score_history']) {
1339 halfmove_num = parseInt(halfmove_num);
1340 if (first_move_num === undefined || halfmove_num < first_move_num) {
1341 first_move_num = halfmove_num;
1344 if (first_move_num !== undefined) {
1345 var last_move_num = data['position']['move_num'] * 2 - 3;
1346 if (data['position']['toplay'] === 'B') {
1350 // Possibly truncate some moves if we don't have enough width.
1351 // FIXME: Sometimes width() for #scorecontainer (and by extent,
1352 // #scoresparkcontainer) on Chrome for mobile seems to start off
1353 // at something very small, and then suddenly snap back into place.
1355 var max_moves = Math.floor($("#scoresparkcontainer").width() / 5) - 5;
1356 if (last_move_num - first_move_num > max_moves) {
1357 first_move_num = last_move_num - max_moves;
1360 var min_score = -100;
1361 var max_score = 100;
1362 var last_score = null;
1364 for (var halfmove_num = first_move_num; halfmove_num <= last_move_num; ++halfmove_num) {
1365 if (data['score_history'][halfmove_num]) {
1366 var score = compute_plot_score(data['score_history'][halfmove_num]);
1368 if (score < min_score) min_score = score;
1369 if (score > max_score) max_score = score;
1371 scores.push(last_score);
1373 if (data['score']) {
1374 scores.push(compute_plot_score(data['score']));
1376 // FIXME: at some widths, calling sparkline() seems to push
1377 // #scorecontainer under the board.
1378 $('#scorespark').unbind('sparklineClick');
1379 $("#scorespark").sparkline(scores, {
1382 chartRangeMin: min_score,
1383 chartRangeMax: max_score,
1384 tooltipFormatter: function(sparkline, options, fields) {
1385 // score_history contains the Nth _position_, but format_tooltip
1386 // wants to format the Nth _move_; thus the -1.
1387 return format_tooltip(data, fields[0].offset + first_move_num - 1);
1390 $('#scorespark').unbind('sparklineClick');
1391 $('#scorespark').bind('sparklineClick', function(event) {
1392 var sparkline = event.sparklines[0];
1393 var region = sparkline.getCurrentRegionFields();
1394 if (region[0].offset !== undefined) {
1395 show_line(0, first_move_num + region[0].offset - 1);
1399 $("#scorespark").text("");
1402 $("#scorespark").text("");
1407 * @param {number} num_viewers
1409 var update_num_viewers = function(num_viewers) {
1411 if (num_viewers === null) {
1413 } else if (num_viewers == 1) {
1414 text = "You are the only current viewer";
1416 text = num_viewers + " current viewers";
1418 if (display_fen !== null) {
1419 var counter = Math.floor(display_fen.split(" ")[4] / 2);
1420 if (counter >= 20) {
1421 text = text.replace("current ", "");
1422 text += " | 50-move rule: " + counter;
1425 $("#numviewers").text(text);
1428 var update_clock = function() {
1429 clearTimeout(clock_timer);
1431 var data = displayed_analysis_data || current_analysis_data;
1434 if (data['position']) {
1435 var result = data['position']['result'];
1436 if (result === '1-0') {
1437 $("#whiteclock").text("1");
1438 $("#blackclock").text("0");
1439 $("#whiteclock").removeClass("running-clock");
1440 $("#blackclock").removeClass("running-clock");
1443 if (result === '1/2-1/2') {
1444 $("#whiteclock").text("1/2");
1445 $("#blackclock").text("1/2");
1446 $("#whiteclock").removeClass("running-clock");
1447 $("#blackclock").removeClass("running-clock");
1450 if (result === '0-1') {
1451 $("#whiteclock").text("0");
1452 $("#blackclock").text("1");
1453 $("#whiteclock").removeClass("running-clock");
1454 $("#blackclock").removeClass("running-clock");
1459 var white_clock_ms = null;
1460 var black_clock_ms = null;
1463 if (data['position'] &&
1464 data['position']['white_clock'] &&
1465 data['position']['black_clock']) {
1466 white_clock_ms = data['position']['white_clock'] * 1000;
1467 black_clock_ms = data['position']['black_clock'] * 1000;
1470 // Dynamic clock (only one, obviously).
1472 if (data['position']['white_clock_target']) {
1474 $("#whiteclock").addClass("running-clock");
1475 $("#blackclock").removeClass("running-clock");
1476 } else if (data['position']['black_clock_target']) {
1478 $("#whiteclock").removeClass("running-clock");
1479 $("#blackclock").addClass("running-clock");
1481 $("#whiteclock").removeClass("running-clock");
1482 $("#blackclock").removeClass("running-clock");
1486 var now = new Date().getTime() + client_clock_offset_ms;
1487 remaining_ms = data['position'][color + '_clock_target'] * 1000 - now;
1488 if (color === "white") {
1489 white_clock_ms = remaining_ms;
1491 black_clock_ms = remaining_ms;
1495 if (white_clock_ms === null || black_clock_ms === null) {
1496 $("#whiteclock").empty();
1497 $("#blackclock").empty();
1501 // If either player has twenty minutes or less left, add the second counters.
1502 // This matches what DGT clocks do.
1503 var show_seconds = (white_clock_ms < 60 * 20 * 1000 || black_clock_ms < 60 * 20 * 1000);
1506 // See when the clock will change next, and update right after that.
1509 next_update_ms = remaining_ms % 1000 + 100;
1511 next_update_ms = remaining_ms % 60000 + 100;
1513 clock_timer = setTimeout(update_clock, next_update_ms);
1516 $("#whiteclock").text(format_clock(white_clock_ms, show_seconds));
1517 $("#blackclock").text(format_clock(black_clock_ms, show_seconds));
1521 * @param {Number} remaining_ms
1522 * @param {boolean} show_seconds
1524 var format_clock = function(remaining_ms, show_seconds) {
1525 if (remaining_ms <= 0) {
1533 var remaining = Math.floor(remaining_ms / 1000);
1534 var seconds = remaining % 60;
1535 remaining = (remaining - seconds) / 60;
1536 var minutes = remaining % 60;
1537 remaining = (remaining - minutes) / 60;
1538 var hours = remaining;
1540 return format_2d(hours) + ":" + format_2d(minutes) + ":" + format_2d(seconds);
1542 return format_2d(hours) + ":" + format_2d(minutes);
1549 var format_2d = function(x) {
1558 * @param {string} move
1559 * @param {Number} move_num Move number of this move.
1560 * @param {boolean} white_to_play Whether white is to play this move.
1562 var format_move_with_number = function(move, move_num, white_to_play) {
1564 if (white_to_play) {
1565 ret = move_num + '. ';
1567 ret = move_num + '… ';
1574 * @param {string} move
1575 * @param {Number} halfmove_num Half-move number that is to be played,
1578 var format_halfmove_with_number = function(move, halfmove_num) {
1579 return format_move_with_number(
1581 Math.floor(halfmove_num / 2) + 1,
1582 halfmove_num % 2 == 0);
1586 * @param {Object} data
1587 * @param {Number} halfmove_num
1589 var format_tooltip = function(data, halfmove_num) {
1590 if (data['score_history'][halfmove_num + 1] ||
1591 (halfmove_num + 1) === data['position']['history'].length) {
1592 // Position is in the history, or it is the current position
1593 // (which is implicitly tacked onto the history).
1596 if ((halfmove_num + 1) === data['position']['history'].length) {
1597 move = data['position']['last_move'];
1598 short_score = format_short_score(data['score']);
1600 move = data['position']['history'][halfmove_num];
1601 short_score = format_short_score(data['score_history'][halfmove_num + 1]);
1603 if (halfmove_num === -1) {
1604 return "Start position: " + short_score;
1606 var move_with_number = format_halfmove_with_number(move, halfmove_num);
1607 return "After " + move_with_number + ": " + short_score;
1610 for (var i = halfmove_num; i --> -1; ) {
1611 if (data['score_history'][i]) {
1612 var move = data['position']['history'][i];
1614 return "[Analysis kept from start position]";
1616 return "[Analysis kept from " + format_halfmove_with_number(move, i) + "]";
1624 * @param {boolean} truncate_history
1626 var set_truncate_history = function(truncate_history) {
1627 truncate_display_history = truncate_history;
1628 update_refutation_lines();
1630 window['set_truncate_history'] = set_truncate_history;
1633 * @param {number} line_num
1634 * @param {number} move_num
1636 var show_line = function(line_num, move_num) {
1637 if (line_num == -1) {
1638 current_display_line = null;
1639 current_display_move = null;
1640 hash_refutation_lines = null;
1641 if (displayed_analysis_data) {
1642 // TODO: Support exiting to history position if we are in an
1643 // analysis line of a history position.
1644 displayed_analysis_data = null;
1649 current_display_line = jQuery.extend({}, display_lines[line_num]); // Shallow clone.
1650 current_display_move = move_num + current_display_line.start_display_move_num;
1652 current_display_line_is_history = (line_num == 0);
1654 update_historic_analysis();
1655 update_displayed_line();
1656 update_board_highlight();
1657 update_move_highlight();
1660 window['show_line'] = show_line;
1662 var prev_move = function() {
1663 if (current_display_line &&
1664 current_display_move >= current_display_line.start_display_move_num) {
1665 --current_display_move;
1667 update_historic_analysis();
1668 update_displayed_line();
1669 update_move_highlight();
1671 window['prev_move'] = prev_move;
1673 var next_move = function() {
1674 if (current_display_line &&
1675 current_display_move < current_display_line.pv.length - 1) {
1676 ++current_display_move;
1678 update_historic_analysis();
1679 update_displayed_line();
1680 update_move_highlight();
1682 window['next_move'] = next_move;
1684 var next_game = function() {
1685 if (current_games === null) {
1689 // Try to find the game we are currently looking at.
1690 for (var game_num = 0; game_num < current_games.length; ++game_num) {
1691 var game = current_games[game_num];
1692 if (game['url'] === backend_url) {
1693 var next_game_num = (game_num + 1) % current_games.length;
1694 switch_backend(current_games[next_game_num]);
1699 // Couldn't find it; give up.
1702 var update_historic_analysis = function() {
1703 if (!current_display_line_is_history) {
1706 if (current_display_move == current_display_line.pv.length - 1) {
1707 displayed_analysis_data = null;
1711 // Fetch old analysis for this line if it exists.
1712 var hiddenboard = chess_from(current_display_line.start_fen, current_display_line.pv, current_display_move);
1713 var filename = "/history/move" + (current_display_move + 1) + "-" +
1714 hiddenboard.fen().replace(/ /g, '_').replace(/\//g, '-') + ".json";
1716 current_historic_xhr = $.ajax({
1718 }).done(function(data, textstatus, xhr) {
1719 displayed_analysis_data = data;
1721 }).fail(function(jqXHR, textStatus, errorThrown) {
1722 if (textStatus === "abort") {
1723 // Aborted because we are switching backends. Don't do anything;
1724 // we will already have been cleared.
1726 displayed_analysis_data = {'failed': true};
1733 * @param {string} fen
1735 var update_imbalance = function(fen) {
1736 var hiddenboard = new Chess(fen);
1737 var imbalance = {'k': 0, 'q': 0, 'r': 0, 'b': 0, 'n': 0, 'p': 0};
1738 for (var row = 0; row < 8; ++row) {
1739 for (var col = 0; col < 8; ++col) {
1740 var col_text = String.fromCharCode('a1'.charCodeAt(0) + col);
1741 var row_text = String.fromCharCode('a1'.charCodeAt(1) + row);
1742 var square = col_text + row_text;
1743 var contents = hiddenboard.get(square);
1744 if (contents !== null) {
1745 if (contents.color === 'w') {
1746 ++imbalance[contents.type];
1748 --imbalance[contents.type];
1753 var white_imbalance = '';
1754 var black_imbalance = '';
1755 for (var piece in imbalance) {
1756 for (var i = 0; i < imbalance[piece]; ++i) {
1757 white_imbalance += '<img src="' + svg_pieces['w' + piece.toUpperCase()] + '" alt="" style="width: 15px;height: 15px;" class="imbalance-piece">';
1758 white_imbalance += '<img src="' + svg_pieces['b' + piece.toUpperCase()] + '" alt="" style="width: 15px;height: 15px;" class="imbalance-inverted-piece">';
1760 for (var i = 0; i < -imbalance[piece]; ++i) {
1761 black_imbalance += '<img src="' + svg_pieces['b' + piece.toUpperCase()] + '" alt="" style="width: 15px;height: 15px;" class="imbalance-piece">';
1762 black_imbalance += '<img src="' + svg_pieces['w' + piece.toUpperCase()] + '" alt="" style="width: 15px;height: 15px;" class="imbalance-inverted-piece">';
1765 $('#whiteimbalance').html(white_imbalance);
1766 $('#blackimbalance').html(black_imbalance);
1769 /** Mark the currently selected move in red.
1770 * Also replaces the PV with the current displayed line if it's not shown
1771 * anywhere else on the screen.
1773 var update_move_highlight = function() {
1774 if (highlighted_move !== null) {
1775 highlighted_move.removeClass('highlight');
1777 if (current_display_line) {
1778 var display_line_num = find_display_line_matching_num();
1779 if (display_line_num === null) {
1780 // Replace the PV with the (complete) line.
1781 $("#pvtitle").text("Exploring:");
1782 current_display_line.start_display_move_num = 0;
1783 display_lines.push(current_display_line);
1784 $("#pv").html(print_pv(display_lines.length - 1, null)); // FIXME
1785 display_line_num = display_lines.length - 1;
1787 // Clear out the PV, so it's not selected by anything later.
1788 display_lines[1].pv = [];
1791 highlighted_move = $("#automove" + display_line_num + "-" + (current_display_move - current_display_line.start_display_move_num));
1792 highlighted_move.addClass('highlight');
1797 * See if the current displayed line is identical to any of the ones
1798 * we have on screen. (It might not be if e.g. the analysis reloaded
1799 * since we started looking.)
1803 var find_display_line_matching_num = function() {
1804 for (var i = 0; i < display_lines.length; ++i) {
1805 var line = display_lines[i];
1806 if (line.start_display_move_num > 0) continue;
1807 if (current_display_line.start_fen !== line.start_fen) continue;
1808 if (current_display_line.pv.length !== line.pv.length) continue;
1810 for (var j = 0; j < line.pv.length; ++j) {
1811 if (current_display_line.pv[j] !== line.pv[j]) {
1823 /** Update the board based on the currently displayed line.
1825 * TODO: This should really be called only whenever something changes,
1826 * instead of all the time.
1828 var update_displayed_line = function() {
1829 if (current_display_line === null) {
1830 $("#linenav").hide();
1831 $("#linemsg").show();
1832 display_fen = base_fen;
1833 set_board_position(base_fen);
1834 update_imbalance(base_fen);
1838 $("#linenav").show();
1839 $("#linemsg").hide();
1841 if (current_display_move <= 0) {
1842 $("#prevmove").html("Previous");
1844 $("#prevmove").html("<a href=\"javascript:prev_move();\">Previous</a></span>");
1846 if (current_display_move == current_display_line.pv.length - 1) {
1847 $("#nextmove").html("Next");
1849 $("#nextmove").html("<a href=\"javascript:next_move();\">Next</a></span>");
1852 var hiddenboard = chess_from(current_display_line.start_fen, current_display_line.pv, current_display_move);
1853 set_board_position(hiddenboard.fen());
1854 if (display_fen !== hiddenboard.fen() && !current_display_line_is_history) {
1855 // Fire off a hash request, since we're now off the main position
1856 // and it just changed.
1857 explore_hash(hiddenboard.fen());
1859 display_fen = hiddenboard.fen();
1860 update_imbalance(hiddenboard.fen());
1863 var set_board_position = function(new_fen) {
1864 board_is_animating = true;
1865 var old_fen = board.fen();
1866 board.position(new_fen);
1867 if (board.fen() === old_fen) {
1868 board_is_animating = false;
1873 * @param {boolean} param_enable_sound
1875 var set_sound = function(param_enable_sound) {
1876 enable_sound = param_enable_sound;
1878 $("#soundon").html("<strong>On</strong>");
1879 $("#soundoff").html("<a href=\"javascript:set_sound(false)\">Off</a>");
1881 // Seemingly at least Firefox prefers MP3 over Opus; tell it otherwise,
1882 // and also preload the file since the user has selected audio.
1883 var ding = document.getElementById('ding');
1884 if (ding && ding.canPlayType && ding.canPlayType('audio/ogg; codecs="opus"') === 'probably') {
1885 ding.src = 'ding.opus';
1889 $("#soundon").html("<a href=\"javascript:set_sound(true)\">On</a>");
1890 $("#soundoff").html("<strong>Off</strong>");
1892 if (supports_html5_storage()) {
1893 localStorage['enable_sound'] = enable_sound ? 1 : 0;
1896 window['set_sound'] = set_sound;
1898 /** Send off a hash probe request to the backend.
1899 * @param {string} fen
1901 var explore_hash = function(fen) {
1902 // If we already have a backend response going, abort it.
1903 if (current_hash_xhr) {
1904 current_hash_xhr.abort();
1906 if (current_hash_display_timer) {
1907 clearTimeout(current_hash_display_timer);
1908 current_hash_display_timer = null;
1910 $("#refutationlines").empty();
1911 current_hash_xhr = $.ajax({
1912 url: backend_hash_url + "?fen=" + fen
1913 }).done(function(data, textstatus, xhr) {
1914 show_explore_hash_results(data, fen);
1918 /** Process the JSON response from a hash probe request.
1919 * @param {!Object} data
1920 * @param {string} fen
1922 var show_explore_hash_results = function(data, fen) {
1923 if (board_is_animating) {
1924 // Updating while the animation is still going causes
1925 // the animation to jerk. This is pretty crude, but it will do.
1926 current_hash_display_timer = setTimeout(function() { show_explore_hash_results(data, fen); }, 100);
1929 current_hash_display_timer = null;
1930 hash_refutation_lines = data['lines'];
1934 // almost all of this stuff comes from the chessboard.js example page
1935 var onDragStart = function(source, piece, position, orientation) {
1936 var pseudogame = new Chess(display_fen);
1937 if (pseudogame.game_over() === true ||
1938 (pseudogame.turn() === 'w' && piece.search(/^b/) !== -1) ||
1939 (pseudogame.turn() === 'b' && piece.search(/^w/) !== -1)) {
1943 recommended_move = get_best_move(pseudogame, source, null, pseudogame.turn() === 'b');
1944 if (recommended_move) {
1945 var squareEl = $('#board .square-' + recommended_move.to);
1946 squareEl.addClass('highlight1-32417');
1951 var mousedownSquare = function(e) {
1952 reverse_dragging_from = null;
1953 var square = $(this).attr('data-square');
1955 var pseudogame = new Chess(display_fen);
1956 if (pseudogame.game_over() === true) {
1960 // If the square is empty, or has a piece of the side not to move,
1961 // we handle it. If not, normal piece dragging will take it.
1962 var position = board.position();
1963 if (!position.hasOwnProperty(square) ||
1964 (pseudogame.turn() === 'w' && position[square].search(/^b/) !== -1) ||
1965 (pseudogame.turn() === 'b' && position[square].search(/^w/) !== -1)) {
1966 reverse_dragging_from = square;
1967 recommended_move = get_best_move(pseudogame, null, square, pseudogame.turn() === 'b');
1968 if (recommended_move) {
1969 var squareEl = $('#board .square-' + recommended_move.from);
1970 squareEl.addClass('highlight1-32417');
1971 squareEl = $('#board .square-' + recommended_move.to);
1972 squareEl.addClass('highlight1-32417');
1977 var mouseupSquare = function(e) {
1978 if (reverse_dragging_from === null) {
1981 var source = $(this).attr('data-square');
1982 var target = reverse_dragging_from;
1983 reverse_dragging_from = null;
1984 if (onDrop(source, target) !== 'snapback') {
1985 onSnapEnd(source, target);
1987 $("#board").find('.square-55d63').removeClass('highlight1-32417');
1990 var get_best_move = function(game, source, target, invert) {
1991 var moves = game.moves({ verbose: true });
1992 if (source !== null) {
1993 moves = moves.filter(function(move) { return move.from == source; });
1995 if (target !== null) {
1996 moves = moves.filter(function(move) { return move.to == target; });
1998 if (moves.length == 0) {
2001 if (moves.length == 1) {
2005 // More than one move. Use the display lines (if we have them)
2006 // to disambiguate; otherwise, we have no information.
2008 for (var i = 0; i < moves.length; ++i) {
2009 move_hash[moves[i].san] = moves[i];
2012 // See if we're already exploring some line.
2013 if (current_display_line &&
2014 current_display_move < current_display_line.pv.length - 1) {
2015 var first_move = current_display_line.pv[current_display_move + 1];
2016 if (move_hash[first_move]) {
2017 return move_hash[first_move];
2021 // History and PV take priority over the display lines.
2022 for (var i = 0; i < 2; ++i) {
2023 var line = display_lines[i];
2024 var first_move = line.pv[line.start_display_move_num];
2025 if (move_hash[first_move]) {
2026 return move_hash[first_move];
2030 var best_move = null;
2031 var best_move_score = null;
2033 for (var move in refutation_lines) {
2034 var line = refutation_lines[move];
2035 if (!line['score']) {
2038 var first_move = line['pv'][0];
2039 if (move_hash[first_move]) {
2040 var score = compute_score_sort_key(line['score'], line['depth'], invert);
2041 if (best_move_score === null || score > best_move_score) {
2042 best_move = move_hash[first_move];
2043 best_move_score = score;
2050 var onDrop = function(source, target) {
2051 if (source === target) {
2052 if (recommended_move === null) {
2055 // Accept the move. It will be changed in onSnapEnd.
2059 // Suggestion not asked for.
2060 recommended_move = null;
2063 // see if the move is legal
2064 var pseudogame = new Chess(display_fen);
2065 var move = pseudogame.move({
2068 promotion: 'q' // NOTE: always promote to a queen for example simplicity
2072 if (move === null) return 'snapback';
2075 var onSnapEnd = function(source, target) {
2076 if (source === target && recommended_move !== null) {
2077 source = recommended_move.from;
2078 target = recommended_move.to;
2080 recommended_move = null;
2081 var pseudogame = new Chess(display_fen);
2082 var move = pseudogame.move({
2085 promotion: 'q' // NOTE: always promote to a queen for example simplicity
2088 if (current_display_line &&
2089 current_display_move < current_display_line.pv.length - 1 &&
2090 current_display_line.pv[current_display_move + 1] === move.san) {
2095 // Walk down the displayed lines until we find one that starts with
2096 // this move, then select that. Note that this gives us a good priority
2097 // order (history first, then PV, then multi-PV lines).
2098 for (var i = 0; i < display_lines.length; ++i) {
2099 if (i == 1 && current_display_line) {
2100 // Do not choose PV if not on it.
2103 var line = display_lines[i];
2104 if (line.pv[line.start_display_move_num] === move.san) {
2110 // Shouldn't really be here if we have hash probes, but there's really
2111 // nothing we can do.
2113 // End of dragging-related code.
2115 var fmt_cp = function(v) {
2119 return "+" + (v / 100).toFixed(2);
2122 return "-" + (v / 100).toFixed(2);
2126 var format_short_score = function(score) {
2130 if (score[0] === 'T' || score[0] === 't') {
2131 var ret = "TB\u00a0";
2132 if (score[2]) { // Is a bound.
2133 ret = score[2] + "\u00a0TB\u00a0";
2135 if (score[0] === 'T') {
2136 return ret + Math.ceil(score[1] / 2);
2138 return ret + "-" + Math.ceil(score[1] / 2);
2140 } else if (score[0] === 'M' || score[0] === 'm') {
2141 var sign = (score[0] === 'm') ? '-' : '';
2142 if (score[2]) { // Is a bound.
2143 return score[2] + "\u00a0M " + sign + score[1];
2145 return "M " + sign + score[1];
2147 } else if (score[0] === 'd') {
2149 } else if (score[0] === 'cp') {
2150 if (score[2]) { // Is a bound.
2151 return score[2] + "\u00a0" + fmt_cp(score[1]);
2153 return fmt_cp(score[1]);
2159 var format_long_score = function(score) {
2163 if (score[0] === 'T') {
2164 if (score[1] == 0) {
2165 return "Won for white (tablebase)";
2167 return "White wins in " + Math.ceil(score[1] / 2);
2169 } else if (score[0] === 't') {
2170 if (score[1] == -1) {
2171 return "Won for black (tablebase)";
2173 return "Black wins in " + Math.ceil(score[1] / 2);
2175 } else if (score[0] === 'M') {
2176 if (score[1] == 0) {
2177 return "White wins by checkmate";
2179 return "White mates in " + score[1];
2181 } else if (score[0] === 'm') {
2182 if (score[1] == 0) {
2183 return "Black wins by checkmate";
2185 return "Black mates in " + score[1];
2187 } else if (score[0] === 'd') {
2188 return "Theoretical draw";
2189 } else if (score[0] === 'cp') {
2190 return "Score: " + format_short_score(score);
2195 var compute_plot_score = function(score) {
2196 if (score[0] === 'M' || score[0] === 'T') {
2198 } else if (score[0] === 'm' || score[0] === 't') {
2200 } else if (score[0] === 'd') {
2202 } else if (score[0] === 'cp') {
2203 if (score[1] > 500) {
2205 } else if (score[1] < -500) {
2215 * @param score The score digest tuple.
2216 * @param {?number} depth Depth the move has been computed to, or null.
2217 * @param {boolean} invert Whether black is to play.
2218 * @param {boolean=} depth_secondary_key
2221 var compute_score_sort_key = function(score, depth, invert, depth_secondary_key) {
2226 if (score[0] === 'T') {
2227 // White reaches TB win.
2228 s = 89999 - score[1];
2229 } else if (score[0] === 't') {
2230 // Black reaches TB win.
2231 s = -(89999 - score[1]);
2232 } else if (score[0] === 'M') {
2234 s = 99999 - score[1];
2235 } else if (score[0] === 'm') {
2237 s = -(99999 - score[1]);
2238 } else if (score[0] === 'd') {
2240 } else if (score[0] === 'cp') {
2245 if (depth_secondary_key) {
2246 return s * 200 + (depth || 0);
2256 * @param {Object} game
2258 var switch_backend = function(game) {
2259 // Stop looking at historic data.
2260 current_display_line = null;
2261 current_display_move = null;
2262 displayed_analysis_data = null;
2263 if (current_historic_xhr) {
2264 current_historic_xhr.abort();
2267 // If we already have a backend response going, abort it.
2268 if (current_analysis_xhr) {
2269 current_analysis_xhr.abort();
2271 if (current_hash_xhr) {
2272 current_hash_xhr.abort();
2275 // Otherwise, we should have a timer going to start a new one.
2277 if (current_analysis_request_timer) {
2278 clearTimeout(current_analysis_request_timer);
2279 current_analysis_request_timer = null;
2281 if (current_hash_display_timer) {
2282 clearTimeout(current_hash_display_timer);
2283 current_hash_display_timer = null;
2286 // Request an immediate fetch with the new backend.
2287 backend_url = game['url'];
2288 backend_hash_url = game['hashurl'];
2289 window.location.hash = '#' + game['id'];
2290 current_analysis_data = null;
2294 window['switch_backend'] = switch_backend;
2296 window['flip'] = function() { board.flip(); redraw_arrows(); };
2298 // Mostly from Wikipedia's chess set as of October 2022, but some pieces are from
2299 // the 2013 version, as I like those better (and it matches the 2014 PNGs; nobody
2300 // really likes change, do they?). That is wK, bK, bQ. wQ is also slightly different,
2301 // but not enough to notice.
2302 const svg_pieces = {
2303 'wK': 'data:image/svg+xml;base64,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',
2304 'wQ': 'data:image/svg+xml;base64,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',
2305 'wR': 'data:image/svg+xml;base64,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',
2306 'wB': 'data:image/svg+xml;base64,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',
2307 'wN': 'data:image/svg+xml;base64,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',
2308 'wP': 'data:image/svg+xml;base64,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',
2309 'bK': 'data:image/svg+xml;base64,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',
2310 'bQ': 'data:image/svg+xml;base64,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',
2311 'bR': 'data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiIHN0YW5kYWxvbmU9Im5vIj8+CjwhRE9DVFlQRSBzdmcgUFVCTElDICItLy9XM0MvL0RURCBTVkcgMS4xLy9FTiIgImh0dHA6Ly93d3cudzMub3JnL0dyYXBoaWNzL1NWRy8xLjEvRFREL3N2ZzExLmR0ZCI+CjxzdmcgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIiB2ZXJzaW9uPSIxLjEiIHdpZHRoPSI0NSIgaGVpZ2h0PSI0NSI+CiAgPGcgc3R5bGU9Im9wYWNpdHk6MTsgZmlsbDojMDAwMDAwOyBmaWxsLW9wYWNpdHk6MTsgZmlsbC1ydWxlOmV2ZW5vZGQ7IHN0cm9rZTojMDAwMDAwOyBzdHJva2Utd2lkdGg6MS41OyBzdHJva2UtbGluZWNhcDpyb3VuZDtzdHJva2UtbGluZWpvaW46cm91bmQ7c3Ryb2tlLW1pdGVybGltaXQ6NDsgc3Ryb2tlLWRhc2hhcnJheTpub25lOyBzdHJva2Utb3BhY2l0eToxOyIgdHJhbnNmb3JtPSJ0cmFuc2xhdGUoMCwwLjMpIj4KICAgIDxwYXRoCiAgICAgIGQ9Ik0gOSwzOSBMIDM2LDM5IEwgMzYsMzYgTCA5LDM2IEwgOSwzOSB6ICIKICAgICAgc3R5bGU9InN0cm9rZS1saW5lY2FwOmJ1dHQ7IiAvPgogICAgPHBhdGgKICAgICAgZD0iTSAxMi41LDMyIEwgMTQsMjkuNSBMIDMxLDI5LjUgTCAzMi41LDMyIEwgMTIuNSwzMiB6ICIKICAgICAgc3R5bGU9InN0cm9rZS1saW5lY2FwOmJ1dHQ7IiAvPgogICAgPHBhdGgKICAgICAgZD0iTSAxMiwzNiBMIDEyLDMyIEwgMzMsMzIgTCAzMywzNiBMIDEyLDM2IHogIgogICAgICBzdHlsZT0ic3Ryb2tlLWxpbmVjYXA6YnV0dDsiIC8+CiAgICA8cGF0aAogICAgICBkPSJNIDE0LDI5LjUgTCAxNCwxNi41IEwgMzEsMTYuNSBMIDMxLDI5LjUgTCAxNCwyOS41IHogIgogICAgICBzdHlsZT0ic3Ryb2tlLWxpbmVjYXA6YnV0dDtzdHJva2UtbGluZWpvaW46bWl0ZXI7IiAvPgogICAgPHBhdGgKICAgICAgZD0iTSAxNCwxNi41IEwgMTEsMTQgTCAzNCwxNCBMIDMxLDE2LjUgTCAxNCwxNi41IHogIgogICAgICBzdHlsZT0ic3Ryb2tlLWxpbmVjYXA6YnV0dDsiIC8+CiAgICA8cGF0aAogICAgICBkPSJNIDExLDE0IEwgMTEsOSBMIDE1LDkgTCAxNSwxMSBMIDIwLDExIEwgMjAsOSBMIDI1LDkgTCAyNSwxMSBMIDMwLDExIEwgMzAsOSBMIDM0LDkgTCAzNCwxNCBMIDExLDE0IHogIgogICAgICBzdHlsZT0ic3Ryb2tlLWxpbmVjYXA6YnV0dDsiIC8+CiAgICA8cGF0aAogICAgICBkPSJNIDEyLDM1LjUgTCAzMywzNS41IEwgMzMsMzUuNSIKICAgICAgc3R5bGU9ImZpbGw6bm9uZTsgc3Ryb2tlOiNmZmZmZmY7IHN0cm9rZS13aWR0aDoxOyBzdHJva2UtbGluZWpvaW46bWl0ZXI7IiAvPgogICAgPHBhdGgKICAgICAgZD0iTSAxMywzMS41IEwgMzIsMzEuNSIKICAgICAgc3R5bGU9ImZpbGw6bm9uZTsgc3Ryb2tlOiNmZmZmZmY7IHN0cm9rZS13aWR0aDoxOyBzdHJva2UtbGluZWpvaW46bWl0ZXI7IiAvPgogICAgPHBhdGgKICAgICAgZD0iTSAxNCwyOS41IEwgMzEsMjkuNSIKICAgICAgc3R5bGU9ImZpbGw6bm9uZTsgc3Ryb2tlOiNmZmZmZmY7IHN0cm9rZS13aWR0aDoxOyBzdHJva2UtbGluZWpvaW46bWl0ZXI7IiAvPgogICAgPHBhdGgKICAgICAgZD0iTSAxNCwxNi41IEwgMzEsMTYuNSIKICAgICAgc3R5bGU9ImZpbGw6bm9uZTsgc3Ryb2tlOiNmZmZmZmY7IHN0cm9rZS13aWR0aDoxOyBzdHJva2UtbGluZWpvaW46bWl0ZXI7IiAvPgogICAgPHBhdGgKICAgICAgZD0iTSAxMSwxNCBMIDM0LDE0IgogICAgICBzdHlsZT0iZmlsbDpub25lOyBzdHJva2U6I2ZmZmZmZjsgc3Ryb2tlLXdpZHRoOjE7IHN0cm9rZS1saW5lam9pbjptaXRlcjsiIC8+CiAgPC9nPgo8L3N2Zz4K',
2312 'bB': 'data:image/svg+xml;base64,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',
2313 'bN': 'data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiIHN0YW5kYWxvbmU9Im5vIj8+DQo8IURPQ1RZUEUgc3ZnIFBVQkxJQyAiLS8vVzNDLy9EVEQgU1ZHIDEuMS8vRU4iICJodHRwOi8vd3d3LnczLm9yZy9HcmFwaGljcy9TVkcvMS4xL0RURC9zdmcxMS5kdGQiPg0KPHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZlcnNpb249IjEuMSIgd2lkdGg9IjQ1IiBoZWlnaHQ9IjQ1Ij4NCiAgPGcgc3R5bGU9Im9wYWNpdHk6MTsgZmlsbDpub25lOyBmaWxsLW9wYWNpdHk6MTsgZmlsbC1ydWxlOmV2ZW5vZGQ7IHN0cm9rZTojMDAwMDAwOyBzdHJva2Utd2lkdGg6MS41OyBzdHJva2UtbGluZWNhcDpyb3VuZDtzdHJva2UtbGluZWpvaW46cm91bmQ7c3Ryb2tlLW1pdGVybGltaXQ6NDsgc3Ryb2tlLWRhc2hhcnJheTpub25lOyBzdHJva2Utb3BhY2l0eToxOyIgdHJhbnNmb3JtPSJ0cmFuc2xhdGUoMCwwLjMpIj4NCiAgICA8cGF0aA0KICAgICAgZD0iTSAyMiwxMCBDIDMyLjUsMTEgMzguNSwxOCAzOCwzOSBMIDE1LDM5IEMgMTUsMzAgMjUsMzIuNSAyMywxOCINCiAgICAgIHN0eWxlPSJmaWxsOiMwMDAwMDA7IHN0cm9rZTojMDAwMDAwOyIgLz4NCiAgICA8cGF0aA0KICAgICAgZD0iTSAyNCwxOCBDIDI0LjM4LDIwLjkxIDE4LjQ1LDI1LjM3IDE2LDI3IEMgMTMsMjkgMTMuMTgsMzEuMzQgMTEsMzEgQyA5Ljk1OCwzMC4wNiAxMi40MSwyNy45NiAxMSwyOCBDIDEwLDI4IDExLjE5LDI5LjIzIDEwLDMwIEMgOSwzMCA1Ljk5NywzMSA2LDI2IEMgNiwyNCAxMiwxNCAxMiwxNCBDIDEyLDE0IDEzLjg5LDEyLjEgMTQsMTAuNSBDIDEzLjI3LDkuNTA2IDEzLjUsOC41IDEzLjUsNy41IEMgMTQuNSw2LjUgMTYuNSwxMCAxNi41LDEwIEwgMTguNSwxMCBDIDE4LjUsMTAgMTkuMjgsOC4wMDggMjEsNyBDIDIyLDcgMjIsMTAgMjIsMTAiDQogICAgICBzdHlsZT0iZmlsbDojMDAwMDAwOyBzdHJva2U6IzAwMDAwMDsiIC8+DQogICAgPHBhdGgNCiAgICAgIGQ9Ik0gOS41IDI1LjUgQSAwLjUgMC41IDAgMSAxIDguNSwyNS41IEEgMC41IDAuNSAwIDEgMSA5LjUgMjUuNSB6Ig0KICAgICAgc3R5bGU9ImZpbGw6I2ZmZmZmZjsgc3Ryb2tlOiNmZmZmZmY7IiAvPg0KICAgIDxwYXRoDQogICAgICBkPSJNIDE1IDE1LjUgQSAwLjUgMS41IDAgMSAxICAxNCwxNS41IEEgMC41IDEuNSAwIDEgMSAgMTUgMTUuNSB6Ig0KICAgICAgdHJhbnNmb3JtPSJtYXRyaXgoMC44NjYsMC41LC0wLjUsMC44NjYsOS42OTMsLTUuMTczKSINCiAgICAgIHN0eWxlPSJmaWxsOiNmZmZmZmY7IHN0cm9rZTojZmZmZmZmOyIgLz4NCiAgICA8cGF0aA0KICAgICAgZD0iTSAyNC41NSwxMC40IEwgMjQuMSwxMS44NSBMIDI0LjYsMTIgQyAyNy43NSwxMyAzMC4yNSwxNC40OSAzMi41LDE4Ljc1IEMgMzQuNzUsMjMuMDEgMzUuNzUsMjkuMDYgMzUuMjUsMzkgTCAzNS4yLDM5LjUgTCAzNy40NSwzOS41IEwgMzcuNSwzOSBDIDM4LDI4Ljk0IDM2LjYyLDIyLjE1IDM0LjI1LDE3LjY2IEMgMzEuODgsMTMuMTcgMjguNDYsMTEuMDIgMjUuMDYsMTAuNSBMIDI0LjU1LDEwLjQgeiAiDQogICAgICBzdHlsZT0iZmlsbDojZmZmZmZmOyBzdHJva2U6bm9uZTsiIC8+DQogIDwvZz4NCjwvc3ZnPg0K',
2314 'bP': 'data:image/svg+xml;base64,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',
2317 var svg_piece_theme = function(piece) {
2318 return svg_pieces[piece];
2321 var init = function() {
2322 unique = get_unique();
2324 // Load settings from HTML5 local storage if available.
2325 if (supports_html5_storage() && localStorage['enable_sound']) {
2326 set_sound(parseInt(localStorage['enable_sound']));
2332 board = new window.ChessBoard('board', {
2333 onMoveEnd: function() { board_is_animating = false; },
2336 pieceTheme: svg_piece_theme,
2337 onDragStart: onDragStart,
2339 onSnapEnd: onSnapEnd
2341 $("#board").on('mousedown', '.square-55d63', mousedownSquare);
2342 $("#board").on('mouseup', '.square-55d63', mouseupSquare);
2345 $(window).resize(function() {
2347 update_sparkline(displayed_analysis_data || current_analysis_data);
2348 update_board_highlight();
2351 $(window).keyup(function(event) {
2352 if (event.which == 39) { // Left arrow.
2354 } else if (event.which == 37) { // Right arrow.
2356 } else if (event.which >= 49 && event.which <= 57) { // 1-9.
2357 var num = event.which - 49;
2358 if (current_games && current_games.length >= num) {
2359 switch_backend(current_games[num]);
2361 } else if (event.which == 78) { // N.
2365 window.addEventListener('hashchange', possibly_switch_game_from_hash, false);
2366 possibly_switch_game_from_hash();
2368 $(document).ready(init);