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 process_update_response(data, textstatus, xhr);
263 if (!backend_url.match(/history/)) {
265 current_analysis_request_timer = setTimeout(function() { request_update(); }, timeout);
267 }).fail(function(jqXHR, textStatus, errorThrown) {
268 document.body.style.opacity = null;
269 if (textStatus === "abort") {
270 // Aborted because we are switching backends. Abandon and don't retry,
271 // because another one is already started for us.
273 // Backend error or similar. Wait ten seconds, then try again.
274 current_analysis_request_timer = setTimeout(function() { request_update(); }, 10000);
279 var process_update_response = function(data, textstatus, xhr) {
280 sync_server_clock(xhr.getResponseHeader('Date'));
281 ims = xhr.getResponseHeader('X-RGLM');
282 var num_viewers = xhr.getResponseHeader('X-RGNV');
284 if (Array.isArray(data)) {
285 new_data = JSON.parse(JSON.stringify(current_analysis_data));
286 JSON_delta.patch(new_data, data);
291 var minimum_version = xhr.getResponseHeader('X-RGMV');
292 if (minimum_version && minimum_version > SCRIPT_VERSION) {
293 // Upgrade to latest version with a force-reload.
294 location.reload(true);
297 // Verify that the PV makes sense.
299 if (new_data['pv']) {
300 var hiddenboard = new Chess(new_data['position']['fen']);
301 for (var i = 0; i < new_data['pv'].length; ++i) {
302 if (hiddenboard.move(new_data['pv'][i]) === null) {
310 possibly_play_sound(current_analysis_data, new_data);
311 current_analysis_data = new_data;
313 update_num_viewers(num_viewers);
315 console.log("Received invalid update, waiting five seconds and trying again.");
316 setTimeout(function() { location.reload(true); }, 5000);
320 var possibly_play_sound = function(old_data, new_data) {
324 if (old_data === null) {
327 var ding = document.getElementById('ding');
328 if (ding && ding.play) {
329 if (old_data['position'] && old_data['position']['fen'] &&
330 new_data['position'] && new_data['position']['fen'] &&
331 (old_data['position']['fen'] !== new_data['position']['fen'] ||
332 old_data['position']['move_num'] !== new_data['position']['move_num'])) {
339 * @type {!string} server_date_string
341 var sync_server_clock = function(server_date_string) {
342 var server_time_ms = new Date(server_date_string).getTime();
343 var client_time_ms = new Date().getTime();
344 var estimated_offset_ms = server_time_ms - client_time_ms;
346 // In order not to let the noise move us too much back and forth
347 // (the server only has one-second resolution anyway), we only
348 // change an existing skew if we are at least five seconds off.
349 if (client_clock_offset_ms === null ||
350 Math.abs(estimated_offset_ms - client_clock_offset_ms) > 5000) {
351 client_clock_offset_ms = estimated_offset_ms;
355 var clear_arrows = function() {
356 for (var i = 0; i < arrows.length; ++i) {
358 if (arrows[i].svg.parentElement) {
359 arrows[i].svg.parentElement.removeChild(arrows[i].svg);
361 delete arrows[i].svg;
366 occupied_by_arrows = [];
367 for (var y = 0; y < 8; ++y) {
368 occupied_by_arrows.push([false, false, false, false, false, false, false, false]);
372 var redraw_arrows = function() {
373 for (var i = 0; i < arrows.length; ++i) {
374 position_arrow(arrows[i]);
378 /** @param {!number} x
381 var sign = function(x) {
391 /** See if drawing this arrow on the board would cause unduly amount of confusion.
392 * @param {!string} from The square the arrow is from (e.g. e4).
393 * @param {!string} to The square the arrow is to (e.g. e4).
396 var interfering_arrow = function(from, to) {
397 var from_col = from.charCodeAt(0) - "a1".charCodeAt(0);
398 var from_row = from.charCodeAt(1) - "a1".charCodeAt(1);
399 var to_col = to.charCodeAt(0) - "a1".charCodeAt(0);
400 var to_row = to.charCodeAt(1) - "a1".charCodeAt(1);
402 occupied_by_arrows[from_row][from_col] = true;
404 // Knight move: Just check that we haven't been at the destination before.
405 if ((Math.abs(to_col - from_col) == 2 && Math.abs(to_row - from_row) == 1) ||
406 (Math.abs(to_col - from_col) == 1 && Math.abs(to_row - from_row) == 2)) {
407 return occupied_by_arrows[to_row][to_col];
410 // Sliding piece: Check if anything except the from-square is seen before.
411 var dx = sign(to_col - from_col);
412 var dy = sign(to_row - from_row);
418 if (occupied_by_arrows[y][x]) {
421 occupied_by_arrows[y][x] = true;
422 } while (x != to_col || y != to_row);
427 /** Find a point along the coordinate system given by the given line,
428 * <t> units forward from the start of the line, <u> units to the right of it.
429 * @param {!number} x1
430 * @param {!number} x2
431 * @param {!number} y1
432 * @param {!number} y2
435 * @return {!string} The point in "x y" form, suitable for SVG paths.
437 var point_from_start = function(x1, y1, x2, y2, t, u) {
441 var norm = 1.0 / Math.sqrt(dx * dx + dy * dy);
445 var x = x1 + dx * t + dy * u;
446 var y = y1 + dy * t - dx * u;
450 /** Find a point along the coordinate system given by the given line,
451 * <t> units forward from the end of the line, <u> units to the right of it.
452 * @param {!number} x1
453 * @param {!number} x2
454 * @param {!number} y1
455 * @param {!number} y2
458 * @return {!string} The point in "x y" form, suitable for SVG paths.
460 var point_from_end = function(x1, y1, x2, y2, t, u) {
464 var norm = 1.0 / Math.sqrt(dx * dx + dy * dy);
468 var x = x2 + dx * t + dy * u;
469 var y = y2 + dy * t - dx * u;
473 var position_arrow = function(arrow) {
475 if (arrow.svg.parentElement) {
476 arrow.svg.parentElement.removeChild(arrow.svg);
480 if (current_display_line !== null && !current_display_line_is_history) {
484 var zoom_factor = $("#board").width() / 400.0;
485 var line_width = arrow.line_width * zoom_factor;
486 var arrow_size = arrow.arrow_size * zoom_factor;
488 var square_width = $(".square-a8").width();
489 var pos, from_y, to_y, from_x, to_x;
490 if (board.orientation() === 'black') {
491 pos = $(".square-h1").position();
492 from_y = (arrow.from_row + 0.5)*square_width;
493 to_y = (arrow.to_row + 0.5)*square_width;
494 from_x = (7 - arrow.from_col + 0.5)*square_width;
495 to_x = (7 - arrow.to_col + 0.5)*square_width;
497 pos = $(".square-a8").position();
498 from_y = (7 - arrow.from_row + 0.5)*square_width;
499 to_y = (7 - arrow.to_row + 0.5)*square_width;
500 from_x = (arrow.from_col + 0.5)*square_width;
501 to_x = (arrow.to_col + 0.5)*square_width;
504 var SVG_NS = "http://www.w3.org/2000/svg";
505 var XHTML_NS = "http://www.w3.org/1999/xhtml";
506 var svg = document.createElementNS(SVG_NS, "svg");
507 svg.setAttribute("width", /** @type{number} */ ($("#board").width()));
508 svg.setAttribute("height", /** @type{number} */ ($("#board").height()));
509 svg.setAttribute("style", "position: absolute");
510 svg.setAttribute("position", "absolute");
511 svg.setAttribute("version", "1.1");
512 svg.setAttribute("class", "c1");
513 svg.setAttribute("xmlns", XHTML_NS);
521 var outline = document.createElementNS(SVG_NS, "path");
522 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));
523 outline.setAttribute("xmlns", XHTML_NS);
524 outline.setAttribute("stroke", "#666");
525 outline.setAttribute("stroke-width", line_width + 2);
526 outline.setAttribute("fill", "none");
527 svg.appendChild(outline);
529 var path = document.createElementNS(SVG_NS, "path");
530 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));
531 path.setAttribute("xmlns", XHTML_NS);
532 path.setAttribute("stroke", arrow.fg_color);
533 path.setAttribute("stroke-width", line_width);
534 path.setAttribute("fill", "none");
535 svg.appendChild(path);
537 // Then the arrow head.
538 var head = document.createElementNS(SVG_NS, "path");
539 head.setAttribute("d",
540 "M " + point_from_end(x1, y1, x2, y2, 0, 0) +
541 " L " + point_from_end(x1, y1, x2, y2, -arrow_size, -arrow_size / 2) +
542 " L " + point_from_end(x1, y1, x2, y2, -arrow_size * .623, 0.0) +
543 " L " + point_from_end(x1, y1, x2, y2, -arrow_size, arrow_size / 2) +
544 " L " + point_from_end(x1, y1, x2, y2, 0, 0));
545 head.setAttribute("xmlns", XHTML_NS);
546 head.setAttribute("stroke", "#000");
547 head.setAttribute("stroke-width", "1");
548 head.setAttribute("fill", arrow.fg_color);
549 svg.appendChild(head);
551 $(svg).css({ top: pos.top, left: pos.left, 'pointer-events': 'none' });
552 document.body.appendChild(svg);
557 * @param {!string} from_square
558 * @param {!string} to_square
559 * @param {!string} fg_color
560 * @param {number} line_width
561 * @param {number} arrow_size
563 var create_arrow = function(from_square, to_square, fg_color, line_width, arrow_size) {
564 var from_col = from_square.charCodeAt(0) - "a1".charCodeAt(0);
565 var from_row = from_square.charCodeAt(1) - "a1".charCodeAt(1);
566 var to_col = to_square.charCodeAt(0) - "a1".charCodeAt(0);
567 var to_row = to_square.charCodeAt(1) - "a1".charCodeAt(1);
575 line_width: line_width,
576 arrow_size: arrow_size,
580 position_arrow(arrow);
584 var compare_by_score = function(refutation_lines, invert, a, b) {
585 var sa = compute_score_sort_key(refutation_lines[b]['score'], refutation_lines[b]['depth'], invert);
586 var sb = compute_score_sort_key(refutation_lines[a]['score'], refutation_lines[a]['depth'], invert);
591 * Fake multi-PV using the refutation lines. Find all “relevant” moves,
592 * sorted by quality, descending.
594 * @param {!Object} data
595 * @param {number} margin The maximum number of centipawns worse than the
596 * best move can be and still be included.
597 * @param {boolean} invert Whether black is to play.
598 * @return {Array.<string>} The FEN representation (e.g. Ne4) of all
599 * moves, in score order.
601 var find_nonstupid_moves = function(data, margin, invert) {
602 // First of all, if there are any moves that are more than 0.5 ahead of
603 // the primary move, the refutation lines are probably bunk, so just
605 var best_score = undefined;
606 var pv_score = undefined;
607 for (var move in data['refutation_lines']) {
608 var line = data['refutation_lines'][move];
609 var score = compute_score_sort_key(line['score'], line['depth'], invert, false);
610 if (move == data['pv'][0]) {
613 if (best_score === undefined || score > best_score) {
616 if (line['depth'] < 8) {
621 if (best_score - pv_score > 50) {
625 // Now find all moves that are within “margin” of the best score.
626 // The PV move will always be first.
628 for (var move in data['refutation_lines']) {
629 var line = data['refutation_lines'][move];
630 var score = compute_score_sort_key(line['score'], line['depth'], invert);
631 if (move != data['pv'][0] && best_score - score <= margin) {
635 moves = moves.sort(function(a, b) { return compare_by_score(data['refutation_lines'], data['position']['toplay'] === 'B', a, b) });
636 moves.unshift(data['pv'][0]);
645 var thousands = function(x) {
646 return String(x).split('').reverse().join('').replace(/(\d{3}\B)/g, '$1,').split('').reverse().join('');
650 * @param {!string} start_fen
651 * @param {Array.<string>} pv
652 * @param {number} move_num
653 * @param {!string} toplay
654 * @param {Array<{ first_move: integer, score: Object }>} scores
655 * @param {number} start_display_move_num
656 * @param {number=} opt_limit
657 * @param {boolean=} opt_showlast
659 var add_pv = function(start_fen, pv, move_num, toplay, scores, start_display_move_num, opt_limit, opt_showlast) {
661 start_fen: start_fen,
663 move_num: parseInt(move_num),
666 start_display_move_num: start_display_move_num
668 var splicepos = null;
669 if (scores !== null && scores.length >= 1 &&
670 scores[scores.length - 1].score !== undefined &&
671 scores[scores.length - 1].score !== null &&
672 (scores[scores.length - 1].score[0] === 'T' ||
673 scores[scores.length - 1].score[0] === 't')) {
674 splicepos = scores[scores.length - 1].score[1];
676 return print_pv(display_lines.length - 1, splicepos, opt_limit, opt_showlast);
680 * @param {number} line_num
681 * @param {?number} splicepos If non-null, where the tablebase-spliced portion of the TB starts.
682 * @param {number=} opt_limit If set, show at most this number of moves.
683 * @param {boolean=} opt_showlast If limit is set, show the last moves instead of the first ones.
685 var print_pv = function(line_num, splicepos, opt_limit, opt_showlast) {
686 var display_line = display_lines[line_num];
687 var pv = display_line.pv;
688 var move_num = display_line.move_num;
689 var toplay = display_line.toplay;
691 // Truncate PV at the start if needed.
692 var start_display_move_num = display_line.start_display_move_num;
693 if (start_display_move_num > 0) {
694 pv = pv.slice(start_display_move_num);
695 var to_add = start_display_move_num;
696 if (toplay === 'B') {
701 if (to_add % 2 == 1) {
705 move_num += to_add / 2;
706 if (splicepos !== null && splicepos > 0) {
714 if (opt_limit && opt_showlast && pv.length > opt_limit) {
715 // Truncate the PV at the beginning (instead of at the end).
716 // We assume here that toplay is 'W'. We also assume that if
717 // opt_showlast is set, then it is the history, and thus,
718 // the UI should be to expand the history.
719 ret = '(<a class="move" href="javascript:collapse_history(false)">…</a>) ';
720 i = pv.length - opt_limit;
725 } else if (toplay == 'B' && pv.length > 0) {
727 if (splicepos === 0) {
731 move += "<a class=\"move\" id=\"automove" + line_num + "-0\" href=\"javascript:show_line(" + line_num + ", " + 0 + ");\">" + pv[0] + "</a>";
732 ret = move_num + '. … ' + move;
737 for ( ; i < pv.length; ++i) {
738 var move = "<a class=\"move\" id=\"automove" + line_num + "-" + i + "\" href=\"javascript:show_line(" + line_num + ", " + i + ");\">" + pv[i] + "</a>";
739 if (splicepos === i) {
745 if (i > opt_limit && !opt_showlast) {
754 ret += move_num + '. ' + move;
768 /** Update the highlighted to/from squares on the board.
769 * Based on the global "highlight_from" and "highlight_to" variables.
771 var update_board_highlight = function() {
772 $("#board").find('.square-55d63').removeClass('nonuglyhighlight');
773 if ((current_display_line === null || current_display_line_is_history) &&
774 highlight_from !== undefined && highlight_to !== undefined) {
775 $("#board").find('.square-' + highlight_from).addClass('nonuglyhighlight');
776 $("#board").find('.square-' + highlight_to).addClass('nonuglyhighlight');
780 var update_history = function() {
781 if (display_lines[0] === null || display_lines[0].pv.length == 0) {
782 $("#history").html("No history");
783 } else if (truncate_display_history) {
784 $("#history").html(print_pv(0, null, 8, true));
787 '(<a class="move" href="javascript:collapse_history(true)">collapse</a>) ' +
793 * @param {!boolean} truncate_history
795 var collapse_history = function(truncate_history) {
796 truncate_display_history = truncate_history;
799 window['collapse_history'] = collapse_history;
801 /** Update the HTML display of multi-PV from the global "refutation_lines".
803 * Also recreates the global "display_lines".
805 var update_refutation_lines = function() {
806 if (base_fen === null) {
809 if (display_lines.length > 2) {
810 // Truncate so that only the history and PV is left.
811 display_lines = [ display_lines[0], display_lines[1] ];
813 var tbl = $("#refutationlines");
816 if (display_lines.length < 2) {
820 // Find out where the lines start from.
822 var base_scores = display_lines[1].scores;
823 var start_display_move_num = 0;
824 if (hash_refutation_lines) {
825 base_line = current_display_line.pv.slice(0, current_display_move + 1);
826 base_scores = current_display_line.scores;
827 start_display_move_num = base_line.length;
831 for (var move in refutation_lines) {
835 var invert = (toplay === 'B');
836 if (current_display_line && current_display_move % 2 == 0 && !current_display_line_is_history) {
839 moves = moves.sort(function(a, b) { return compare_by_score(refutation_lines, invert, a, b) });
840 for (var i = 0; i < moves.length; ++i) {
841 var line = refutation_lines[moves[i]];
843 var tr = document.createElement("tr");
845 var move_td = document.createElement("td");
846 tr.appendChild(move_td);
847 $(move_td).addClass("move");
849 var scores = base_scores.concat([{ first_move: start_display_move_num, score: line['score'] }]);
851 if (line['pv'].length == 0) {
852 // Not found, so just make a one-move PV.
853 var move = "<a class=\"move\" href=\"javascript:show_line(" + display_lines.length + ", " + 0 + ");\">" + line['move'] + "</a>";
854 $(move_td).html(move);
855 var score_td = document.createElement("td");
857 $(score_td).addClass("score");
858 $(score_td).text("—");
859 tr.appendChild(score_td);
861 var depth_td = document.createElement("td");
862 tr.appendChild(depth_td);
863 $(depth_td).addClass("depth");
864 $(depth_td).text("—");
866 var pv_td = document.createElement("td");
867 tr.appendChild(pv_td);
868 $(pv_td).addClass("pv");
869 $(pv_td).html(add_pv(base_fen, base_line.concat([ line['move'] ]), move_num, toplay, scores, start_display_move_num));
875 var move = "<a class=\"move\" href=\"javascript:show_line(" + display_lines.length + ", " + 0 + ");\">" + line['move'] + "</a>";
876 $(move_td).html(move);
878 var score_td = document.createElement("td");
879 tr.appendChild(score_td);
880 $(score_td).addClass("score");
881 $(score_td).text(format_short_score(line['score']));
883 var depth_td = document.createElement("td");
884 tr.appendChild(depth_td);
885 $(depth_td).addClass("depth");
886 if (line['depth'] && line['depth'] >= 0) {
887 $(depth_td).text("d" + line['depth']);
889 $(depth_td).text("—");
892 var pv_td = document.createElement("td");
893 tr.appendChild(pv_td);
894 $(pv_td).addClass("pv");
895 $(pv_td).html(add_pv(base_fen, base_line.concat(line['pv']), move_num, toplay, scores, start_display_move_num, 10));
900 // Update the move highlight, as we've rewritten all the HTML.
901 update_move_highlight();
905 * Create a Chess.js board object, containing the given position plus the given moves,
906 * up to the given limit.
908 * @param {?string} fen
909 * @param {Array.<string>} moves
910 * @param {number} last_move
912 var chess_from = function(fen, moves, last_move) {
913 var hiddenboard = new Chess();
914 if (fen !== null && fen !== undefined) {
915 hiddenboard.load(fen);
917 for (var i = 0; i <= last_move; ++i) {
918 if (moves[i] === '0-0') {
919 hiddenboard.move('O-O');
920 } else if (moves[i] === '0-0-0') {
921 hiddenboard.move('O-O-O');
923 hiddenboard.move(moves[i]);
929 var update_game_list = function(games) {
930 $("#games").text("");
931 if (games === null) {
935 var games_div = document.getElementById('games');
936 for (var game_num = 0; game_num < games.length; ++game_num) {
937 var game = games[game_num];
938 var game_span = document.createElement("span");
939 game_span.setAttribute("class", "game");
941 var game_name = document.createTextNode(game['name']);
942 if (game['url'] === backend_url) {
944 game_span.appendChild(game_name);
946 if (current_analysis_data && current_analysis_data['position']) {
948 if (current_analysis_data['position']['result']) {
949 score = " (" + current_analysis_data['position']['result'] + ")";
951 score = " (" + format_short_score(current_analysis_data['score']) + ")";
953 game_span.appendChild(document.createTextNode(score));
957 var game_a = document.createElement("a");
958 game_a.setAttribute("href", "#" + game['id']);
959 game_a.appendChild(game_name);
960 game_span.appendChild(game_a);
963 if (game['result']) {
964 score = " (" + game['result'] + ")";
966 score = " (" + format_short_score(game['score']) + ")";
968 game_span.appendChild(document.createTextNode(score));
971 games_div.appendChild(game_span);
976 * Try to find a running game that matches with the current hash,
977 * and switch to it if we're not already displaying it.
979 var possibly_switch_game_from_hash = function() {
980 var history_match = window.location.hash.match(/^#history=([a-zA-Z0-9_-]+)/);
981 if (history_match !== null) {
982 var game_id = history_match[1];
984 url: '/history/' + game_id + '.json',
986 id: 'history=' + game_id
988 switch_backend(fake_game);
992 if (current_games === null) {
996 var hash = window.location.hash.replace(/^#/,'');
997 for (var i = 0; i < current_games.length; ++i) {
998 if (current_games[i]['id'] === hash) {
999 if (backend_url !== current_games[i]['url']) {
1000 switch_backend(current_games[i]);
1008 * If this is a Chess960 castling which doesn't move the king,
1009 * move the rook instead.
1011 var patch_move = function(move) {
1012 if (move === null) return null;
1013 if (move.from !== move.to) return move;
1015 var f = move.rook_sq & 15;
1016 var r = move.rook_sq >> 4;
1017 var from = ('abcdefgh'.substring(f,f+1) + '87654321'.substring(r,r+1));
1020 if (move.to === 'g1') {
1022 } else if (move.to === 'g8') {
1024 } else if (move.to === 'b1') {
1026 } else if (move.to === 'b8') {
1030 return { from: from, to: to };
1033 /** Update all the HTML on the page, based on current global state.
1035 var update_board = function() {
1036 document.body.style.opacity = null;
1038 var data = displayed_analysis_data || current_analysis_data;
1039 var current_data = current_analysis_data; // Convenience alias.
1043 // Print the history. This is pretty much the only thing that's
1044 // unconditionally taken from current_data (we're not interested in
1045 // historic history).
1046 if (current_data['position']['history']) {
1047 var start = (current_data['position'] && current_data['position']['start_fen']) ? current_data['position']['start_fen'] : 'start';
1048 add_pv(start, current_data['position']['history'], 1, 'W', null, 0, 8, true);
1050 display_lines.push(null);
1054 // Games currently in progress, if any.
1055 if (current_data['games']) {
1056 current_games = current_data['games'];
1057 possibly_switch_game_from_hash();
1059 current_games = null;
1061 update_game_list(current_games);
1063 // The headline. Names are always fetched from current_data;
1064 // the rest can depend a bit.
1067 current_data['position']['player_w'] && current_data['position']['player_b']) {
1068 headline = current_data['position']['player_w'] + '–' +
1069 current_data['position']['player_b'] + ', analysis';
1071 headline = 'Analysis';
1074 // Credits, where applicable. Note that we don't want the footer to change a lot
1075 // when e.g. viewing history, so if any of these changed during the game,
1076 // use the current one still.
1077 if (current_data['using_lomonosov']) {
1078 $("#lomonosov").show();
1080 $("#lomonosov").hide();
1083 // Credits: The engine name/version.
1084 if (current_data['engine'] && current_data['engine']['name'] !== null) {
1085 $("#engineid").text(current_data['engine']['name']);
1088 // Credits: The engine URL.
1089 if (current_data['engine'] && current_data['engine']['url']) {
1090 $("#engineid").attr("href", current_data['engine']['url']);
1092 $("#engineid").removeAttr("href");
1095 // Credits: Engine details.
1096 if (current_data['engine'] && current_data['engine']['details']) {
1097 $("#enginedetails").text(" (" + current_data['engine']['details'] + ")");
1099 $("#enginedetails").text("");
1102 // Credits: Move source, possibly with URL.
1103 if (current_data['move_source'] && current_data['move_source_url']) {
1104 $("#movesource").text("Moves provided by ");
1105 var movesource_a = document.createElement("a");
1106 movesource_a.setAttribute("href", current_data['move_source_url']);
1107 var movesource_text = document.createTextNode(current_data['move_source']);
1108 movesource_a.appendChild(movesource_text);
1109 var movesource_period = document.createTextNode(".");
1110 document.getElementById("movesource").appendChild(movesource_a);
1111 document.getElementById("movesource").appendChild(movesource_period);
1112 } else if (current_data['move_source']) {
1113 $("#movesource").text("Moves provided by " + current_data['move_source'] + ".");
1115 $("#movesource").text("");
1119 if (displayed_analysis_data) {
1120 // Displaying some non-current position, pick out the last move
1121 // from the history. This will work even if the fetch failed.
1122 if (current_display_move !== -1) {
1123 last_move = format_halfmove_with_number(
1124 current_display_line.pv[current_display_move],
1125 current_display_move);
1126 headline += ' after ' + last_move;
1128 } else if (data['position']['last_move'] !== 'none') {
1129 // Find the previous move.
1130 var previous_move_num, previous_toplay;
1131 if (data['position']['toplay'] == 'B') {
1132 previous_move_num = data['position']['move_num'];
1133 previous_toplay = 'W';
1135 previous_move_num = data['position']['move_num'] - 1;
1136 previous_toplay = 'B';
1139 last_move = format_move_with_number(
1140 data['position']['last_move'],
1142 previous_toplay == 'W');
1143 headline += ' after ' + last_move;
1147 $("#headline").text(headline);
1149 // The <title> contains a very brief headline.
1150 var title_elems = [];
1151 if (data['position'] && data['position']['result']) {
1152 title_elems.push(data['position']['result']);
1153 } else if (data['score']) {
1154 title_elems.push(format_short_score(data['score']));
1156 if (last_move !== null) {
1157 title_elems.push(last_move);
1160 if (title_elems.length != 0) {
1161 document.title = '(' + title_elems.join(', ') + ') analysis.sesse.net';
1163 document.title = 'analysis.sesse.net';
1166 // The last move (shown by highlighting the from and to squares).
1167 if (data['position'] && data['position']['last_move_uci']) {
1168 highlight_from = data['position']['last_move_uci'].substr(0, 2);
1169 highlight_to = data['position']['last_move_uci'].substr(2, 2);
1170 } else if (current_display_line_is_history && current_display_line && current_display_move >= 0) {
1171 // We don't have historic analysis for this position, but we
1172 // can reconstruct what the last move was by just replaying
1174 var position = (data['position'] && data['position']['start_fen']) ? data['position']['start_fen'] : null;
1175 var hiddenboard = chess_from(position, current_display_line.pv, current_display_move);
1176 var moves = hiddenboard.history({ verbose: true });
1177 last_move = moves.pop();
1178 highlight_from = last_move.from;
1179 highlight_to = last_move.to;
1181 highlight_from = highlight_to = undefined;
1183 update_board_highlight();
1185 if (data['failed']) {
1186 $("#score").text("No analysis for this move");
1187 $("#pvtitle").text("PV:");
1189 $("#searchstats").html(" ");
1190 $("#refutationlines").empty();
1191 $("#whiteclock").empty();
1192 $("#blackclock").empty();
1193 refutation_lines = [];
1194 update_refutation_lines();
1196 update_displayed_line();
1197 update_move_highlight();
1204 if (current_display_line && !current_display_line_is_history) {
1206 if (current_display_line.scores && current_display_line.scores.length > 0) {
1207 for (var i = 0; i < current_display_line.scores.length; ++i) {
1208 if (current_display_move < current_display_line.scores[i].first_move) {
1211 score = current_display_line.scores[i].score;
1215 $("#score").text(format_long_score(score));
1217 $("#score").text("No score for this line");
1219 } else if (data['score']) {
1220 $("#score").text(format_long_score(data['score']));
1223 // The search stats.
1224 if (data['searchstats']) {
1225 $("#searchstats").html(data['searchstats']);
1226 } else if (data['tablebase'] == 1) {
1227 $("#searchstats").text("Tablebase result");
1228 } else if (data['nodes'] && data['nps'] && data['depth']) {
1229 var stats = thousands(data['nodes']) + ' nodes, ' + thousands(data['nps']) + ' nodes/sec, depth ' + data['depth'] + ' ply';
1230 if (data['seldepth']) {
1231 stats += ' (' + data['seldepth'] + ' selective)';
1233 if (data['tbhits'] && data['tbhits'] > 0) {
1234 if (data['tbhits'] == 1) {
1235 stats += ', one Syzygy hit';
1237 stats += ', ' + thousands(data['tbhits']) + ' Syzygy hits';
1241 $("#searchstats").text(stats);
1243 $("#searchstats").text("");
1246 // Update the board itself.
1247 base_fen = data['position']['fen'];
1248 update_displayed_line();
1251 $("#pvtitle").text("PV:");
1253 var scores = [{ first_move: -1, score: data['score'] }];
1254 $("#pv").html(add_pv(data['position']['fen'], data['pv'], data['position']['move_num'], data['position']['toplay'], scores, 0));
1256 // Update the PV arrow.
1258 if (data['pv'].length >= 1) {
1259 var hiddenboard = new Chess(base_fen);
1261 // draw a continuation arrow as long as it's the same piece
1263 for (var i = 0; i < data['pv'].length; i += 2) {
1264 var move = patch_move(hiddenboard.move(data['pv'][i]));
1266 if ((i >= 2 && move.from != last_to) ||
1267 interfering_arrow(move.from, move.to)) {
1270 create_arrow(move.from, move.to, '#f66', 6, 20);
1272 hiddenboard.move(data['pv'][i + 1]); // To keep continuity.
1275 var alt_moves = find_nonstupid_moves(data, 30, data['position']['toplay'] === 'B');
1276 for (var i = 1; i < alt_moves.length && i < 3; ++i) {
1277 hiddenboard = new Chess(base_fen);
1278 var move = patch_move(hiddenboard.move(alt_moves[i]));
1279 if (move !== null) {
1280 create_arrow(move.from, move.to, '#f66', 1, 10);
1285 // See if all semi-reasonable moves have only one possible response.
1286 if (data['pv'].length >= 2) {
1287 var nonstupid_moves = find_nonstupid_moves(data, 300, data['position']['toplay'] === 'B');
1290 var hiddenboard = new Chess(base_fen);
1291 hiddenboard.move(data['pv'][0]);
1292 response = hiddenboard.move(data['pv'][1]);
1294 for (var i = 0; i < nonstupid_moves.length; ++i) {
1295 if (nonstupid_moves[i] == data['pv'][0]) {
1296 // ignore the PV move for refutation lines.
1299 if (!data['refutation_lines'] ||
1300 !data['refutation_lines'][nonstupid_moves[i]] ||
1301 !data['refutation_lines'][nonstupid_moves[i]]['pv'] ||
1302 data['refutation_lines'][nonstupid_moves[i]]['pv'].length < 2) {
1303 // Incomplete PV, abort.
1304 response = undefined;
1307 var line = data['refutation_lines'][nonstupid_moves[i]];
1308 hiddenboard = new Chess(base_fen);
1309 hiddenboard.move(line['pv'][0]);
1310 var this_response = hiddenboard.move(line['pv'][1]);
1311 if (this_response === null) {
1312 console.log("BUG: ", i);
1314 console.log(line['pv']);
1316 if (response.from !== this_response.from || response.to !== this_response.to) {
1317 // Different response depending on lines, abort.
1318 response = undefined;
1323 if (nonstupid_moves.length > 0 && response !== undefined) {
1324 create_arrow(response.from, response.to, '#66f', 6, 20);
1328 // Update the refutation lines.
1329 base_fen = data['position']['fen'];
1330 move_num = parseInt(data['position']['move_num']);
1331 toplay = data['position']['toplay'];
1332 refutation_lines = hash_refutation_lines || data['refutation_lines'];
1333 update_refutation_lines();
1335 // Update the sparkline last, since its size depends on how everything else reflowed.
1336 update_sparkline(data);
1339 var update_sparkline = function(data) {
1340 if (data && data['score_history']) {
1341 var first_move_num = undefined;
1342 for (var halfmove_num in data['score_history']) {
1343 halfmove_num = parseInt(halfmove_num);
1344 if (first_move_num === undefined || halfmove_num < first_move_num) {
1345 first_move_num = halfmove_num;
1348 if (first_move_num !== undefined) {
1349 var last_move_num = data['position']['move_num'] * 2 - 3;
1350 if (data['position']['toplay'] === 'B') {
1354 // Possibly truncate some moves if we don't have enough width.
1355 // FIXME: Sometimes width() for #scorecontainer (and by extent,
1356 // #scoresparkcontainer) on Chrome for mobile seems to start off
1357 // at something very small, and then suddenly snap back into place.
1359 var max_moves = Math.floor($("#scoresparkcontainer").width() / 5) - 5;
1360 if (last_move_num - first_move_num > max_moves) {
1361 first_move_num = last_move_num - max_moves;
1364 var min_score = -100;
1365 var max_score = 100;
1366 var last_score = null;
1368 for (var halfmove_num = first_move_num; halfmove_num <= last_move_num; ++halfmove_num) {
1369 if (data['score_history'][halfmove_num]) {
1370 var score = compute_plot_score(data['score_history'][halfmove_num]);
1372 if (score < min_score) min_score = score;
1373 if (score > max_score) max_score = score;
1375 scores.push(last_score);
1377 if (data['score']) {
1378 scores.push(compute_plot_score(data['score']));
1380 // FIXME: at some widths, calling sparkline() seems to push
1381 // #scorecontainer under the board.
1382 $('#scorespark').unbind('sparklineClick');
1383 $("#scorespark").sparkline(scores, {
1386 chartRangeMin: min_score,
1387 chartRangeMax: max_score,
1388 tooltipFormatter: function(sparkline, options, fields) {
1389 // score_history contains the Nth _position_, but format_tooltip
1390 // wants to format the Nth _move_; thus the -1.
1391 return format_tooltip(data, fields[0].offset + first_move_num - 1);
1394 $('#scorespark').unbind('sparklineClick');
1395 $('#scorespark').bind('sparklineClick', function(event) {
1396 var sparkline = event.sparklines[0];
1397 var region = sparkline.getCurrentRegionFields();
1398 if (region[0].offset !== undefined) {
1399 show_line(0, first_move_num + region[0].offset - 1);
1403 $("#scorespark").text("");
1406 $("#scorespark").text("");
1411 * @param {number} num_viewers
1413 var update_num_viewers = function(num_viewers) {
1415 if (num_viewers === null) {
1417 } else if (num_viewers == 1) {
1418 text = "You are the only current viewer";
1420 text = num_viewers + " current viewers";
1422 if (display_fen !== null) {
1423 var counter = Math.floor(display_fen.split(" ")[4] / 2);
1424 if (counter >= 20) {
1425 text = text.replace("current ", "");
1426 text += " | 50-move rule: " + counter;
1429 $("#numviewers").text(text);
1432 var update_clock = function() {
1433 clearTimeout(clock_timer);
1435 var data = displayed_analysis_data || current_analysis_data;
1438 if (data['position']) {
1439 var result = data['position']['result'];
1440 if (result === '1-0') {
1441 $("#whiteclock").text("1");
1442 $("#blackclock").text("0");
1443 $("#whiteclock").removeClass("running-clock");
1444 $("#blackclock").removeClass("running-clock");
1447 if (result === '1/2-1/2') {
1448 $("#whiteclock").text("1/2");
1449 $("#blackclock").text("1/2");
1450 $("#whiteclock").removeClass("running-clock");
1451 $("#blackclock").removeClass("running-clock");
1454 if (result === '0-1') {
1455 $("#whiteclock").text("0");
1456 $("#blackclock").text("1");
1457 $("#whiteclock").removeClass("running-clock");
1458 $("#blackclock").removeClass("running-clock");
1463 var white_clock_ms = null;
1464 var black_clock_ms = null;
1467 if (data['position'] &&
1468 data['position']['white_clock'] &&
1469 data['position']['black_clock']) {
1470 white_clock_ms = data['position']['white_clock'] * 1000;
1471 black_clock_ms = data['position']['black_clock'] * 1000;
1474 // Dynamic clock (only one, obviously).
1476 if (data['position']['white_clock_target']) {
1478 $("#whiteclock").addClass("running-clock");
1479 $("#blackclock").removeClass("running-clock");
1480 } else if (data['position']['black_clock_target']) {
1482 $("#whiteclock").removeClass("running-clock");
1483 $("#blackclock").addClass("running-clock");
1485 $("#whiteclock").removeClass("running-clock");
1486 $("#blackclock").removeClass("running-clock");
1490 var now = new Date().getTime() + client_clock_offset_ms;
1491 remaining_ms = data['position'][color + '_clock_target'] * 1000 - now;
1492 if (color === "white") {
1493 white_clock_ms = remaining_ms;
1495 black_clock_ms = remaining_ms;
1499 if (white_clock_ms === null || black_clock_ms === null) {
1500 $("#whiteclock").empty();
1501 $("#blackclock").empty();
1505 // If either player has twenty minutes or less left, add the second counters.
1506 // This matches what DGT clocks do.
1507 var show_seconds = (white_clock_ms < 60 * 20 * 1000 || black_clock_ms < 60 * 20 * 1000);
1510 // See when the clock will change next, and update right after that.
1513 next_update_ms = remaining_ms % 1000 + 100;
1515 next_update_ms = remaining_ms % 60000 + 100;
1517 clock_timer = setTimeout(update_clock, next_update_ms);
1520 $("#whiteclock").text(format_clock(white_clock_ms, show_seconds));
1521 $("#blackclock").text(format_clock(black_clock_ms, show_seconds));
1525 * @param {Number} remaining_ms
1526 * @param {boolean} show_seconds
1528 var format_clock = function(remaining_ms, show_seconds) {
1529 if (remaining_ms <= 0) {
1537 var remaining = Math.floor(remaining_ms / 1000);
1538 var seconds = remaining % 60;
1539 remaining = (remaining - seconds) / 60;
1540 var minutes = remaining % 60;
1541 remaining = (remaining - minutes) / 60;
1542 var hours = remaining;
1544 return format_2d(hours) + ":" + format_2d(minutes) + ":" + format_2d(seconds);
1546 return format_2d(hours) + ":" + format_2d(minutes);
1553 var format_2d = function(x) {
1562 * @param {string} move
1563 * @param {Number} move_num Move number of this move.
1564 * @param {boolean} white_to_play Whether white is to play this move.
1566 var format_move_with_number = function(move, move_num, white_to_play) {
1568 if (white_to_play) {
1569 ret = move_num + '. ';
1571 ret = move_num + '… ';
1578 * @param {string} move
1579 * @param {Number} halfmove_num Half-move number that is to be played,
1582 var format_halfmove_with_number = function(move, halfmove_num) {
1583 return format_move_with_number(
1585 Math.floor(halfmove_num / 2) + 1,
1586 halfmove_num % 2 == 0);
1590 * @param {Object} data
1591 * @param {Number} halfmove_num
1593 var format_tooltip = function(data, halfmove_num) {
1594 if (data['score_history'][halfmove_num + 1] ||
1595 (halfmove_num + 1) === data['position']['history'].length) {
1596 // Position is in the history, or it is the current position
1597 // (which is implicitly tacked onto the history).
1600 if ((halfmove_num + 1) === data['position']['history'].length) {
1601 move = data['position']['last_move'];
1602 short_score = format_short_score(data['score']);
1604 move = data['position']['history'][halfmove_num];
1605 short_score = format_short_score(data['score_history'][halfmove_num + 1]);
1607 if (halfmove_num === -1) {
1608 return "Start position: " + short_score;
1610 var move_with_number = format_halfmove_with_number(move, halfmove_num);
1611 return "After " + move_with_number + ": " + short_score;
1614 for (var i = halfmove_num; i --> -1; ) {
1615 if (data['score_history'][i]) {
1616 var move = data['position']['history'][i];
1618 return "[Analysis kept from start position]";
1620 return "[Analysis kept from " + format_halfmove_with_number(move, i) + "]";
1628 * @param {boolean} truncate_history
1630 var set_truncate_history = function(truncate_history) {
1631 truncate_display_history = truncate_history;
1632 update_refutation_lines();
1634 window['set_truncate_history'] = set_truncate_history;
1637 * @param {number} line_num
1638 * @param {number} move_num
1640 var show_line = function(line_num, move_num) {
1641 if (line_num == -1) {
1642 current_display_line = null;
1643 current_display_move = null;
1644 hash_refutation_lines = null;
1645 if (displayed_analysis_data) {
1646 // TODO: Support exiting to history position if we are in an
1647 // analysis line of a history position.
1648 displayed_analysis_data = null;
1653 current_display_line = jQuery.extend({}, display_lines[line_num]); // Shallow clone.
1654 current_display_move = move_num + current_display_line.start_display_move_num;
1656 current_display_line_is_history = (line_num == 0);
1658 update_historic_analysis();
1659 update_displayed_line();
1660 update_board_highlight();
1661 update_move_highlight();
1664 window['show_line'] = show_line;
1666 var prev_move = function() {
1667 if (current_display_line &&
1668 current_display_move >= current_display_line.start_display_move_num) {
1669 --current_display_move;
1671 update_historic_analysis();
1672 update_displayed_line();
1673 update_move_highlight();
1675 window['prev_move'] = prev_move;
1677 var next_move = function() {
1678 if (current_display_line &&
1679 current_display_move < current_display_line.pv.length - 1) {
1680 ++current_display_move;
1682 update_historic_analysis();
1683 update_displayed_line();
1684 update_move_highlight();
1686 window['next_move'] = next_move;
1688 var next_game = function() {
1689 if (current_games === null) {
1693 // Try to find the game we are currently looking at.
1694 for (var game_num = 0; game_num < current_games.length; ++game_num) {
1695 var game = current_games[game_num];
1696 if (game['url'] === backend_url) {
1697 var next_game_num = (game_num + 1) % current_games.length;
1698 switch_backend(current_games[next_game_num]);
1703 // Couldn't find it; give up.
1706 var update_historic_analysis = function() {
1707 if (!current_display_line_is_history) {
1710 if (current_display_move == current_display_line.pv.length - 1) {
1711 displayed_analysis_data = null;
1715 // Fetch old analysis for this line if it exists.
1716 var hiddenboard = chess_from(current_display_line.start_fen, current_display_line.pv, current_display_move);
1717 var filename = "/history/move" + (current_display_move + 1) + "-" +
1718 hiddenboard.fen().replace(/ /g, '_').replace(/\//g, '-') + ".json";
1720 current_historic_xhr = $.ajax({
1722 }).done(function(data, textstatus, xhr) {
1723 displayed_analysis_data = data;
1725 }).fail(function(jqXHR, textStatus, errorThrown) {
1726 if (textStatus === "abort") {
1727 // Aborted because we are switching backends. Don't do anything;
1728 // we will already have been cleared.
1730 displayed_analysis_data = {'failed': true};
1737 * @param {string} fen
1739 var update_imbalance = function(fen) {
1740 var hiddenboard = new Chess(fen);
1741 var imbalance = {'k': 0, 'q': 0, 'r': 0, 'b': 0, 'n': 0, 'p': 0};
1742 for (var row = 0; row < 8; ++row) {
1743 for (var col = 0; col < 8; ++col) {
1744 var col_text = String.fromCharCode('a1'.charCodeAt(0) + col);
1745 var row_text = String.fromCharCode('a1'.charCodeAt(1) + row);
1746 var square = col_text + row_text;
1747 var contents = hiddenboard.get(square);
1748 if (contents !== null) {
1749 if (contents.color === 'w') {
1750 ++imbalance[contents.type];
1752 --imbalance[contents.type];
1757 var white_imbalance = '';
1758 var black_imbalance = '';
1759 for (var piece in imbalance) {
1760 for (var i = 0; i < imbalance[piece]; ++i) {
1761 white_imbalance += '<img src="' + svg_pieces['w' + piece.toUpperCase()] + '" alt="" style="width: 15px;height: 15px;" class="imbalance-piece">';
1762 white_imbalance += '<img src="' + svg_pieces['b' + piece.toUpperCase()] + '" alt="" style="width: 15px;height: 15px;" class="imbalance-inverted-piece">';
1764 for (var i = 0; i < -imbalance[piece]; ++i) {
1765 black_imbalance += '<img src="' + svg_pieces['b' + piece.toUpperCase()] + '" alt="" style="width: 15px;height: 15px;" class="imbalance-piece">';
1766 black_imbalance += '<img src="' + svg_pieces['w' + piece.toUpperCase()] + '" alt="" style="width: 15px;height: 15px;" class="imbalance-inverted-piece">';
1769 $('#whiteimbalance').html(white_imbalance);
1770 $('#blackimbalance').html(black_imbalance);
1773 /** Mark the currently selected move in red.
1774 * Also replaces the PV with the current displayed line if it's not shown
1775 * anywhere else on the screen.
1777 var update_move_highlight = function() {
1778 if (highlighted_move !== null) {
1779 highlighted_move.removeClass('highlight');
1781 if (current_display_line) {
1782 var display_line_num = find_display_line_matching_num();
1783 if (display_line_num === null) {
1784 // Replace the PV with the (complete) line.
1785 $("#pvtitle").text("Exploring:");
1786 current_display_line.start_display_move_num = 0;
1787 display_lines.push(current_display_line);
1788 $("#pv").html(print_pv(display_lines.length - 1, null)); // FIXME
1789 display_line_num = display_lines.length - 1;
1791 // Clear out the PV, so it's not selected by anything later.
1792 display_lines[1].pv = [];
1795 highlighted_move = $("#automove" + display_line_num + "-" + (current_display_move - current_display_line.start_display_move_num));
1796 highlighted_move.addClass('highlight');
1801 * See if the current displayed line is identical to any of the ones
1802 * we have on screen. (It might not be if e.g. the analysis reloaded
1803 * since we started looking.)
1807 var find_display_line_matching_num = function() {
1808 for (var i = 0; i < display_lines.length; ++i) {
1809 var line = display_lines[i];
1810 if (line.start_display_move_num > 0) continue;
1811 if (current_display_line.start_fen !== line.start_fen) continue;
1812 if (current_display_line.pv.length !== line.pv.length) continue;
1814 for (var j = 0; j < line.pv.length; ++j) {
1815 if (current_display_line.pv[j] !== line.pv[j]) {
1827 /** Update the board based on the currently displayed line.
1829 * TODO: This should really be called only whenever something changes,
1830 * instead of all the time.
1832 var update_displayed_line = function() {
1833 if (current_display_line === null) {
1834 $("#linenav").hide();
1835 $("#linemsg").show();
1836 display_fen = base_fen;
1837 set_board_position(base_fen);
1838 update_imbalance(base_fen);
1842 $("#linenav").show();
1843 $("#linemsg").hide();
1845 if (current_display_move <= 0) {
1846 $("#prevmove").html("Previous");
1848 $("#prevmove").html("<a href=\"javascript:prev_move();\">Previous</a></span>");
1850 if (current_display_move == current_display_line.pv.length - 1) {
1851 $("#nextmove").html("Next");
1853 $("#nextmove").html("<a href=\"javascript:next_move();\">Next</a></span>");
1856 var hiddenboard = chess_from(current_display_line.start_fen, current_display_line.pv, current_display_move);
1857 set_board_position(hiddenboard.fen());
1858 if (display_fen !== hiddenboard.fen() && !current_display_line_is_history) {
1859 // Fire off a hash request, since we're now off the main position
1860 // and it just changed.
1861 explore_hash(hiddenboard.fen());
1863 display_fen = hiddenboard.fen();
1864 update_imbalance(hiddenboard.fen());
1867 var set_board_position = function(new_fen) {
1868 board_is_animating = true;
1869 var old_fen = board.fen();
1870 board.position(new_fen);
1871 if (board.fen() === old_fen) {
1872 board_is_animating = false;
1877 * @param {boolean} param_enable_sound
1879 var set_sound = function(param_enable_sound) {
1880 enable_sound = param_enable_sound;
1882 $("#soundon").html("<strong>On</strong>");
1883 $("#soundoff").html("<a href=\"javascript:set_sound(false)\">Off</a>");
1885 // Seemingly at least Firefox prefers MP3 over Opus; tell it otherwise,
1886 // and also preload the file since the user has selected audio.
1887 var ding = document.getElementById('ding');
1888 if (ding && ding.canPlayType && ding.canPlayType('audio/ogg; codecs="opus"') === 'probably') {
1889 ding.src = 'ding.opus';
1893 $("#soundon").html("<a href=\"javascript:set_sound(true)\">On</a>");
1894 $("#soundoff").html("<strong>Off</strong>");
1896 if (supports_html5_storage()) {
1897 localStorage['enable_sound'] = enable_sound ? 1 : 0;
1900 window['set_sound'] = set_sound;
1902 /** Send off a hash probe request to the backend.
1903 * @param {string} fen
1905 var explore_hash = function(fen) {
1906 // If we already have a backend response going, abort it.
1907 if (current_hash_xhr) {
1908 current_hash_xhr.abort();
1910 if (current_hash_display_timer) {
1911 clearTimeout(current_hash_display_timer);
1912 current_hash_display_timer = null;
1914 $("#refutationlines").empty();
1915 current_hash_xhr = $.ajax({
1916 url: backend_hash_url + "?fen=" + fen
1917 }).done(function(data, textstatus, xhr) {
1918 show_explore_hash_results(data, fen);
1922 /** Process the JSON response from a hash probe request.
1923 * @param {!Object} data
1924 * @param {string} fen
1926 var show_explore_hash_results = function(data, fen) {
1927 if (board_is_animating) {
1928 // Updating while the animation is still going causes
1929 // the animation to jerk. This is pretty crude, but it will do.
1930 current_hash_display_timer = setTimeout(function() { show_explore_hash_results(data, fen); }, 100);
1933 current_hash_display_timer = null;
1934 hash_refutation_lines = data['lines'];
1938 // almost all of this stuff comes from the chessboard.js example page
1939 var onDragStart = function(source, piece, position, orientation) {
1940 var pseudogame = new Chess(display_fen);
1941 if (pseudogame.game_over() === true ||
1942 (pseudogame.turn() === 'w' && piece.search(/^b/) !== -1) ||
1943 (pseudogame.turn() === 'b' && piece.search(/^w/) !== -1)) {
1947 recommended_move = get_best_move(pseudogame, source, null, pseudogame.turn() === 'b');
1948 if (recommended_move) {
1949 var squareEl = $('#board .square-' + recommended_move.to);
1950 squareEl.addClass('highlight1-32417');
1955 var mousedownSquare = function(e) {
1956 reverse_dragging_from = null;
1957 var square = $(this).attr('data-square');
1959 var pseudogame = new Chess(display_fen);
1960 if (pseudogame.game_over() === true) {
1964 // If the square is empty, or has a piece of the side not to move,
1965 // we handle it. If not, normal piece dragging will take it.
1966 var position = board.position();
1967 if (!position.hasOwnProperty(square) ||
1968 (pseudogame.turn() === 'w' && position[square].search(/^b/) !== -1) ||
1969 (pseudogame.turn() === 'b' && position[square].search(/^w/) !== -1)) {
1970 reverse_dragging_from = square;
1971 recommended_move = get_best_move(pseudogame, null, square, pseudogame.turn() === 'b');
1972 if (recommended_move) {
1973 var squareEl = $('#board .square-' + recommended_move.from);
1974 squareEl.addClass('highlight1-32417');
1975 squareEl = $('#board .square-' + recommended_move.to);
1976 squareEl.addClass('highlight1-32417');
1981 var mouseupSquare = function(e) {
1982 if (reverse_dragging_from === null) {
1985 var source = $(this).attr('data-square');
1986 var target = reverse_dragging_from;
1987 reverse_dragging_from = null;
1988 if (onDrop(source, target) !== 'snapback') {
1989 onSnapEnd(source, target);
1991 $("#board").find('.square-55d63').removeClass('highlight1-32417');
1994 var get_best_move = function(game, source, target, invert) {
1995 var moves = game.moves({ verbose: true });
1996 if (source !== null) {
1997 moves = moves.filter(function(move) { return move.from == source; });
1999 if (target !== null) {
2000 moves = moves.filter(function(move) { return move.to == target; });
2002 if (moves.length == 0) {
2005 if (moves.length == 1) {
2009 // More than one move. Use the display lines (if we have them)
2010 // to disambiguate; otherwise, we have no information.
2012 for (var i = 0; i < moves.length; ++i) {
2013 move_hash[moves[i].san] = moves[i];
2016 // See if we're already exploring some line.
2017 if (current_display_line &&
2018 current_display_move < current_display_line.pv.length - 1) {
2019 var first_move = current_display_line.pv[current_display_move + 1];
2020 if (move_hash[first_move]) {
2021 return move_hash[first_move];
2025 // History and PV take priority over the display lines.
2026 for (var i = 0; i < 2; ++i) {
2027 var line = display_lines[i];
2028 var first_move = line.pv[line.start_display_move_num];
2029 if (move_hash[first_move]) {
2030 return move_hash[first_move];
2034 var best_move = null;
2035 var best_move_score = null;
2037 for (var move in refutation_lines) {
2038 var line = refutation_lines[move];
2039 if (!line['score']) {
2042 var first_move = line['pv'][0];
2043 if (move_hash[first_move]) {
2044 var score = compute_score_sort_key(line['score'], line['depth'], invert);
2045 if (best_move_score === null || score > best_move_score) {
2046 best_move = move_hash[first_move];
2047 best_move_score = score;
2054 var onDrop = function(source, target) {
2055 if (source === target) {
2056 if (recommended_move === null) {
2059 // Accept the move. It will be changed in onSnapEnd.
2063 // Suggestion not asked for.
2064 recommended_move = null;
2067 // see if the move is legal
2068 var pseudogame = new Chess(display_fen);
2069 var move = pseudogame.move({
2072 promotion: 'q' // NOTE: always promote to a queen for example simplicity
2076 if (move === null) return 'snapback';
2079 var onSnapEnd = function(source, target) {
2080 if (source === target && recommended_move !== null) {
2081 source = recommended_move.from;
2082 target = recommended_move.to;
2084 recommended_move = null;
2085 var pseudogame = new Chess(display_fen);
2086 var move = pseudogame.move({
2089 promotion: 'q' // NOTE: always promote to a queen for example simplicity
2092 if (current_display_line &&
2093 current_display_move < current_display_line.pv.length - 1 &&
2094 current_display_line.pv[current_display_move + 1] === move.san) {
2099 // Walk down the displayed lines until we find one that starts with
2100 // this move, then select that. Note that this gives us a good priority
2101 // order (history first, then PV, then multi-PV lines).
2102 for (var i = 0; i < display_lines.length; ++i) {
2103 if (i == 1 && current_display_line) {
2104 // Do not choose PV if not on it.
2107 var line = display_lines[i];
2108 if (line.pv[line.start_display_move_num] === move.san) {
2114 // Shouldn't really be here if we have hash probes, but there's really
2115 // nothing we can do.
2117 // End of dragging-related code.
2119 var fmt_cp = function(v) {
2123 return "+" + (v / 100).toFixed(2);
2126 return "-" + (v / 100).toFixed(2);
2130 var format_short_score = function(score) {
2134 if (score[0] === 'T' || score[0] === 't') {
2135 var ret = "TB\u00a0";
2136 if (score[2]) { // Is a bound.
2137 ret = score[2] + "\u00a0TB\u00a0";
2139 if (score[0] === 'T') {
2140 return ret + Math.ceil(score[1] / 2);
2142 return ret + "-" + Math.ceil(score[1] / 2);
2144 } else if (score[0] === 'M' || score[0] === 'm') {
2145 var sign = (score[0] === 'm') ? '-' : '';
2146 if (score[2]) { // Is a bound.
2147 return score[2] + "\u00a0M " + sign + score[1];
2149 return "M " + sign + score[1];
2151 } else if (score[0] === 'd') {
2153 } else if (score[0] === 'cp') {
2154 if (score[2]) { // Is a bound.
2155 return score[2] + "\u00a0" + fmt_cp(score[1]);
2157 return fmt_cp(score[1]);
2163 var format_long_score = function(score) {
2167 if (score[0] === 'T') {
2168 if (score[1] == 0) {
2169 return "Won for white (tablebase)";
2171 return "White wins in " + Math.ceil(score[1] / 2);
2173 } else if (score[0] === 't') {
2174 if (score[1] == -1) {
2175 return "Won for black (tablebase)";
2177 return "Black wins in " + Math.ceil(score[1] / 2);
2179 } else if (score[0] === 'M') {
2180 if (score[1] == 0) {
2181 return "White wins by checkmate";
2183 return "White mates in " + score[1];
2185 } else if (score[0] === 'm') {
2186 if (score[1] == 0) {
2187 return "Black wins by checkmate";
2189 return "Black mates in " + score[1];
2191 } else if (score[0] === 'd') {
2192 return "Theoretical draw";
2193 } else if (score[0] === 'cp') {
2194 return "Score: " + format_short_score(score);
2199 var compute_plot_score = function(score) {
2200 if (score[0] === 'M' || score[0] === 'T') {
2202 } else if (score[0] === 'm' || score[0] === 't') {
2204 } else if (score[0] === 'd') {
2206 } else if (score[0] === 'cp') {
2207 if (score[1] > 500) {
2209 } else if (score[1] < -500) {
2219 * @param score The score digest tuple.
2220 * @param {?number} depth Depth the move has been computed to, or null.
2221 * @param {boolean} invert Whether black is to play.
2222 * @param {boolean=} depth_secondary_key
2225 var compute_score_sort_key = function(score, depth, invert, depth_secondary_key) {
2230 if (score[0] === 'T') {
2231 // White reaches TB win.
2232 s = 89999 - score[1];
2233 } else if (score[0] === 't') {
2234 // Black reaches TB win.
2235 s = -(89999 - score[1]);
2236 } else if (score[0] === 'M') {
2238 s = 99999 - score[1];
2239 } else if (score[0] === 'm') {
2241 s = -(99999 - score[1]);
2242 } else if (score[0] === 'd') {
2244 } else if (score[0] === 'cp') {
2249 if (depth_secondary_key) {
2250 return s * 200 + (depth || 0);
2260 * @param {Object} game
2262 var switch_backend = function(game) {
2263 // Stop looking at historic data.
2264 current_display_line = null;
2265 current_display_move = null;
2266 displayed_analysis_data = null;
2267 if (current_historic_xhr) {
2268 current_historic_xhr.abort();
2271 // If we already have a backend response going, abort it.
2272 if (current_analysis_xhr) {
2273 current_analysis_xhr.abort();
2275 if (current_hash_xhr) {
2276 current_hash_xhr.abort();
2279 // Otherwise, we should have a timer going to start a new one.
2281 if (current_analysis_request_timer) {
2282 clearTimeout(current_analysis_request_timer);
2283 current_analysis_request_timer = null;
2285 if (current_hash_display_timer) {
2286 clearTimeout(current_hash_display_timer);
2287 current_hash_display_timer = null;
2290 // Request an immediate fetch with the new backend.
2291 backend_url = game['url'];
2292 backend_hash_url = game['hashurl'];
2293 window.location.hash = '#' + game['id'];
2294 current_analysis_data = null;
2298 window['switch_backend'] = switch_backend;
2300 window['flip'] = function() { board.flip(); redraw_arrows(); };
2302 // Mostly from Wikipedia's chess set as of October 2022, but some pieces are from
2303 // the 2013 version, as I like those better (and it matches the 2014 PNGs; nobody
2304 // really likes change, do they?). That is wK, bK, bQ. wQ is also slightly different,
2305 // but not enough to notice.
2306 const svg_pieces = {
2307 'wK': 'data:image/svg+xml;base64,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',
2308 'wQ': 'data:image/svg+xml;base64,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',
2309 'wR': 'data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiIHN0YW5kYWxvbmU9Im5vIj8+DQo8IURPQ1RZUEUgc3ZnIFBVQkxJQyAiLS8vVzNDLy9EVEQgU1ZHIDEuMS8vRU4iICJodHRwOi8vd3d3LnczLm9yZy9HcmFwaGljcy9TVkcvMS4xL0RURC9zdmcxMS5kdGQiPg0KPHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZlcnNpb249IjEuMSIgd2lkdGg9IjQ1IiBoZWlnaHQ9IjQ1Ij4NCiAgPGcgc3R5bGU9Im9wYWNpdHk6MTsgZmlsbDojZmZmZmZmOyBmaWxsLW9wYWNpdHk6MTsgZmlsbC1ydWxlOmV2ZW5vZGQ7IHN0cm9rZTojMDAwMDAwOyBzdHJva2Utd2lkdGg6MS41OyBzdHJva2UtbGluZWNhcDpyb3VuZDtzdHJva2UtbGluZWpvaW46cm91bmQ7c3Ryb2tlLW1pdGVybGltaXQ6NDsgc3Ryb2tlLWRhc2hhcnJheTpub25lOyBzdHJva2Utb3BhY2l0eToxOyIgdHJhbnNmb3JtPSJ0cmFuc2xhdGUoMCwwLjMpIj4NCiAgICA8cGF0aA0KICAgICAgZD0iTSA5LDM5IEwgMzYsMzkgTCAzNiwzNiBMIDksMzYgTCA5LDM5IHogIg0KICAgICAgc3R5bGU9InN0cm9rZS1saW5lY2FwOmJ1dHQ7IiAvPg0KICAgIDxwYXRoDQogICAgICBkPSJNIDEyLDM2IEwgMTIsMzIgTCAzMywzMiBMIDMzLDM2IEwgMTIsMzYgeiAiDQogICAgICBzdHlsZT0ic3Ryb2tlLWxpbmVjYXA6YnV0dDsiIC8+DQogICAgPHBhdGgNCiAgICAgIGQ9Ik0gMTEsMTQgTCAxMSw5IEwgMTUsOSBMIDE1LDExIEwgMjAsMTEgTCAyMCw5IEwgMjUsOSBMIDI1LDExIEwgMzAsMTEgTCAzMCw5IEwgMzQsOSBMIDM0LDE0Ig0KICAgICAgc3R5bGU9InN0cm9rZS1saW5lY2FwOmJ1dHQ7IiAvPg0KICAgIDxwYXRoDQogICAgICBkPSJNIDM0LDE0IEwgMzEsMTcgTCAxNCwxNyBMIDExLDE0IiAvPg0KICAgIDxwYXRoDQogICAgICBkPSJNIDMxLDE3IEwgMzEsMjkuNSBMIDE0LDI5LjUgTCAxNCwxNyINCiAgICAgIHN0eWxlPSJzdHJva2UtbGluZWNhcDpidXR0OyBzdHJva2UtbGluZWpvaW46bWl0ZXI7IiAvPg0KICAgIDxwYXRoDQogICAgICBkPSJNIDMxLDI5LjUgTCAzMi41LDMyIEwgMTIuNSwzMiBMIDE0LDI5LjUiIC8+DQogICAgPHBhdGgNCiAgICAgIGQ9Ik0gMTEsMTQgTCAzNCwxNCINCiAgICAgIHN0eWxlPSJmaWxsOm5vbmU7IHN0cm9rZTojMDAwMDAwOyBzdHJva2UtbGluZWpvaW46bWl0ZXI7IiAvPg0KICA8L2c+DQo8L3N2Zz4NCg==',
2310 'wB': 'data:image/svg+xml;base64,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',
2311 'wN': 'data:image/svg+xml;base64,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',
2312 'wP': 'data:image/svg+xml;base64,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',
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2314 'bQ': 'data:image/svg+xml;base64,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',
2315 'bR': 'data:image/svg+xml;base64,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',
2316 'bB': 'data:image/svg+xml;base64,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',
2317 'bN': 'data:image/svg+xml;base64,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',
2318 'bP': 'data:image/svg+xml;base64,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',
2321 var svg_piece_theme = function(piece) {
2322 return svg_pieces[piece];
2325 var init = function() {
2326 unique = get_unique();
2328 // Load settings from HTML5 local storage if available.
2329 if (supports_html5_storage() && localStorage['enable_sound']) {
2330 set_sound(parseInt(localStorage['enable_sound']));
2336 board = new window.ChessBoard('board', {
2337 onMoveEnd: function() { board_is_animating = false; },
2340 pieceTheme: svg_piece_theme,
2341 onDragStart: onDragStart,
2343 onSnapEnd: onSnapEnd
2345 $("#board").on('mousedown', '.square-55d63', mousedownSquare);
2346 $("#board").on('mouseup', '.square-55d63', mouseupSquare);
2349 $(window).resize(function() {
2351 update_sparkline(displayed_analysis_data || current_analysis_data);
2352 update_board_highlight();
2355 $(window).keyup(function(event) {
2356 if (event.which == 39) { // Left arrow.
2358 } else if (event.which == 37) { // Right arrow.
2360 } else if (event.which >= 49 && event.which <= 57) { // 1-9.
2361 var num = event.which - 49;
2362 if (current_games && current_games.length >= num) {
2363 switch_backend(current_games[num]);
2365 } else if (event.which == 78) { // N.
2369 window.addEventListener('hashchange', possibly_switch_game_from_hash, false);
2370 possibly_switch_game_from_hash();
2372 $(document).ready(init);