4 # remoteglot - Connects an abitrary UCI-speaking engine to ICS for easier post-game
5 # analysis, or for live analysis of relayed games. (Do not use for
6 # cheating! Cheating is bad for your karma, and your abuser flag.)
8 # Copyright 2007 Steinar H. Gunderson <sgunderson@bigfoot.com>
9 # Licensed under the GNU General Public License, version 2.
15 use Chess::PGN::Parse;
22 require 'Position.pm';
28 my $server = "freechess.org";
29 my $target = "GMCarlsen";
30 my $engine_cmdline = "'./Deep Rybka 4 SSE42 x64'";
31 my $engine2_cmdline = "./stockfish_13111119_x64_modern_sse42"; # undef for none
32 my $uci_assume_full_compliance = 0; # dangerous :-)
33 my $update_max_interval = 1.0;
43 $SIG{ALRM} = sub { output(); };
44 my $latest_update = undef;
45 my $http_timer = undef;
49 open(FICSLOG, ">ficslog.txt")
50 or die "ficslog.txt: $!";
51 print FICSLOG "Log starting.\n";
55 open(UCILOG, ">ucilog.txt")
56 or die "ucilog.txt: $!";
57 print UCILOG "Log starting.\n";
62 # open the chess engine
63 my $engine = open_engine($engine_cmdline, 'E1', sub { handle_uci(@_, 1); });
64 my $engine2 = open_engine($engine2_cmdline, 'E2', sub { handle_uci(@_, 0); });
67 my ($pos_waiting, $pos_calculating, $pos_calculating_second_engine);
69 uciprint($engine, "setoption name UCI_AnalyseMode value true");
70 # uciprint($engine, "setoption name NalimovPath value /srv/tablebase");
71 uciprint($engine, "setoption name NalimovUsage value Rarely");
72 uciprint($engine, "setoption name Hash value 1024");
73 # uciprint($engine, "setoption name MultiPV value 2");
74 uciprint($engine, "ucinewgame");
76 if (defined($engine2)) {
77 uciprint($engine2, "setoption name UCI_AnalyseMode value true");
78 # uciprint($engine2, "setoption name NalimovPath value /srv/tablebase");
79 uciprint($engine2, "setoption name NalimovUsage value Rarely");
80 uciprint($engine2, "setoption name Hash value 1024");
81 uciprint($engine2, "setoption name Threads value 8");
82 uciprint($engine2, "setoption name MultiPV value 500");
83 uciprint($engine2, "ucinewgame");
86 print "Chess engine ready.\n";
89 my $t = Net::Telnet->new(Timeout => 10, Prompt => '/fics% /');
90 $t->input_log(\*FICSLOG);
92 $t->print("SesseBOT");
93 $t->waitfor('/Press return to enter the server/');
97 $t->cmd("set shout 0");
98 $t->cmd("set seek 0");
99 $t->cmd("set style 12");
100 $t->cmd("observe $target");
101 print "FICS ready.\n";
103 my $ev1 = AnyEvent->io(
106 cb => sub { # what callback to execute
108 my $line = $t->getline(Timeout => 0, errmode => 'return');
109 return if (!defined($line));
117 # Engine events have already been set up by Engine.pm.
121 my ($engine, $line, $primary) = @_;
123 $line =~ s/ / /g; # Sometimes needed for Zappa Mexico
124 print UCILOG localtime() . " $engine->{'tag'} <= $line\n";
125 if ($line =~ /^info/) {
126 my (@infos) = split / /, $line;
129 parse_infos($engine, @infos);
131 if ($line =~ /^id/) {
132 my (@ids) = split / /, $line;
135 parse_ids($engine, @ids);
137 if ($line =~ /^bestmove/) {
139 return if (!$uci_assume_full_compliance);
140 if (defined($pos_waiting)) {
141 uciprint($engine, "position fen " . $pos_waiting->fen());
142 uciprint($engine, "go infinite");
144 $pos_calculating = $pos_waiting;
145 $pos_waiting = undef;
148 $engine2->{'info'} = {};
149 my $pos = $pos_waiting // $pos_calculating;
150 uciprint($engine2, "position fen " . $pos->fen());
151 uciprint($engine2, "go infinite");
152 $pos_calculating_second_engine = $pos;
160 if ($line =~ /^<12> /) {
161 handle_position(Position->new($line));
163 if ($line =~ /^([A-Za-z]+)(?:\([A-Z]+\))* tells you: (.*)$/) {
164 my ($who, $msg) = ($1, $2);
166 next if (grep { $_ eq $who } (@masters) == 0);
168 if ($msg =~ /^fics (.*?)$/) {
169 $t->cmd("tell $who Executing '$1' on FICS.");
171 } elsif ($msg =~ /^uci (.*?)$/) {
172 $t->cmd("tell $who Sending '$1' to the engine.");
173 print { $engine->{'write'} } "$1\n";
174 } elsif ($msg =~ /^pgn (.*?)$/) {
176 $t->cmd("tell $who Starting to poll '$url'.");
177 AnyEvent::HTTP::http_get($url, sub {
178 handle_pgn(@_, $url);
181 $t->cmd("tell $who Couldn't understand '$msg', sorry.");
184 #print "FICS: [$line]\n";
188 my ($body, $header, $url) = @_;
189 my $pgn = Chess::PGN::Parse->new(undef, $body);
190 if (!defined($pgn) || !$pgn->read_game()) {
191 warn "Error in parsing PGN from $url\n";
193 $pgn->quick_parse_game;
194 my $pos = Position->start_pos($pgn->white, $pgn->black);
195 my $moves = $pgn->moves;
196 for my $move (@$moves) {
197 my ($from_row, $from_col, $to_row, $to_col, $promo) = $pos->parse_pretty_move($move);
198 $pos = $pos->make_move($from_row, $from_col, $to_row, $to_col, $promo);
200 handle_position($pos);
203 $http_timer = AnyEvent->timer(after => 1.0, cb => sub {
204 AnyEvent::HTTP::http_get($url, sub {
205 handle_pgn(@_, $url);
210 sub handle_position {
213 # if this is already in the queue, ignore it
214 return if (defined($pos_waiting) && $pos->fen() eq $pos_waiting->fen());
216 # if we're already chewing on this and there's nothing else in the queue,
218 return if (!defined($pos_waiting) && defined($pos_calculating) &&
219 $pos->fen() eq $pos_calculating->fen());
221 # if we're already thinking on something, stop and wait for the engine
223 if (defined($pos_calculating)) {
224 if (!defined($pos_waiting)) {
225 uciprint($engine, "stop");
227 if ($uci_assume_full_compliance) {
230 uciprint($engine, "position fen " . $pos->fen());
231 uciprint($engine, "go infinite");
232 $pos_calculating = $pos;
235 # it's wrong just to give the FEN (the move history is useful,
236 # and per the UCI spec, we should really have sent "ucinewgame"),
238 uciprint($engine, "position fen " . $pos->fen());
239 uciprint($engine, "go infinite");
240 $pos_calculating = $pos;
243 if (defined($engine2)) {
244 if (defined($pos_calculating_second_engine)) {
245 uciprint($engine2, "stop");
247 uciprint($engine2, "position fen " . $pos->fen());
248 uciprint($engine2, "go infinite");
249 $pos_calculating_second_engine = $pos;
251 $engine2->{'info'} = {};
254 $engine->{'info'} = {};
258 # Output a command every move to note that we're
259 # still paying attention -- this is a good tradeoff,
260 # since if no move has happened in the last half
261 # hour, the analysis/relay has most likely stopped
262 # and we should stop hogging server resources.
268 my ($engine, @x) = @_;
271 my $info = $engine->{'info'};
273 # Search for "multipv" first of all, since e.g. Stockfish doesn't put it first.
274 for my $i (0..$#x - 1) {
275 if ($x[$i] =~ 'multipv') {
281 while (scalar @x > 0) {
282 if ($x[0] =~ 'multipv') {
288 if ($x[0] =~ /^(currmove|currmovenumber|cpuload)$/) {
290 my $value = shift @x;
291 $info->{$key} = $value;
294 if ($x[0] =~ /^(depth|seldepth|hashfull|time|nodes|nps|tbhits)$/) {
296 my $value = shift @x;
297 $info->{$key . $mpv} = $value;
300 if ($x[0] eq 'score') {
303 delete $info->{'score_cp' . $mpv};
304 delete $info->{'score_mate' . $mpv};
306 while ($x[0] =~ /^(cp|mate|lowerbound|upperbound)$/) {
309 $info->{'score_cp' . $mpv} = shift @x;
310 } elsif ($x[0] eq 'mate') {
312 $info->{'score_mate' . $mpv} = shift @x;
320 $info->{'pv' . $mpv} = [ @x[1..$#x] ];
323 if ($x[0] eq 'string' || $x[0] eq 'UCI_AnalyseMode' || $x[0] eq 'setting' || $x[0] eq 'contempt') {
327 #print "unknown info '$x[0]', trying to recover...\n";
329 die "Unknown info '" . join(',', @x) . "'";
335 my ($engine, @x) = @_;
337 while (scalar @x > 0) {
338 if ($x[0] =~ /^(name|author)$/) {
340 my $value = join(' ', @x);
341 $engine->{'id'}{$key} = $value;
351 my ($board, @pvs) = @_;
353 if (scalar @pvs == 0 || !defined($pvs[0])) {
358 my ($from_col, $from_row, $to_col, $to_row, $promo) = parse_uci_move($pv);
359 my ($pretty, $nb) = $board->prettyprint_move($from_row, $from_col, $to_row, $to_col, $promo);
360 return ($pretty, prettyprint_pv($nb, @pvs));
366 return if (!defined($pos_calculating));
368 # Don't update too often.
369 my $age = Time::HiRes::tv_interval($latest_update);
370 if ($age < $update_max_interval) {
371 Time::HiRes::alarm($update_max_interval + 0.01 - $age);
375 my $info = $engine->{'info'};
378 # Some programs _always_ report MultiPV, even with only one PV.
379 # In this case, we simply use that data as if MultiPV was never
382 if (exists($info->{'pv1'}) && !exists($info->{'pv2'})) {
383 for my $key (qw(pv score_cp score_mate nodes nps depth seldepth tbhits)) {
384 if (exists($info->{$key . '1'})) {
385 $info->{$key} = $info->{$key . '1'};
391 # Check the PVs first. if they're invalid, just wait, as our data
392 # is most likely out of sync. This isn't a very good solution, as
393 # it can frequently miss stuff, but it's good enough for most users.
397 if (exists($info->{'pv'})) {
398 $dummy = prettyprint_pv($pos_calculating->{'board'}, @{$info->{'pv'}});
402 while (exists($info->{'pv' . $mpv})) {
403 $dummy = prettyprint_pv($pos_calculating->{'board'}, @{$info->{'pv' . $mpv}});
408 $engine->{'info'} = {};
414 $latest_update = [Time::HiRes::gettimeofday];
418 my $info = $engine->{'info'};
419 my $id = $engine->{'id'};
421 my $text = 'Analysis';
422 if ($pos_calculating->{'last_move'} ne 'none') {
423 if ($pos_calculating->{'toplay'} eq 'W') {
424 $text .= sprintf ' after %u. ... %s', ($pos_calculating->{'move_num'}-1), $pos_calculating->{'last_move'};
426 $text .= sprintf ' after %u. %s', $pos_calculating->{'move_num'}, $pos_calculating->{'last_move'};
428 if (exists($id->{'name'})) {
433 if (exists($id->{'name'})) {
434 $text .= " by $id->{'name'}:\n\n";
439 return unless (exists($pos_calculating->{'board'}));
441 if (exists($info->{'pv1'}) && exists($info->{'pv2'})) {
444 while (exists($info->{'pv' . $mpv})) {
445 $text .= sprintf " PV%2u", $mpv;
446 my $score = short_score($info, $pos_calculating, $mpv);
447 $text .= " ($score)" if (defined($score));
450 if (exists($info->{'tbhits' . $mpv}) && $info->{'tbhits' . $mpv} > 0) {
451 if ($info->{'tbhits' . $mpv} == 1) {
452 $tbhits = ", 1 tbhit";
454 $tbhits = sprintf ", %u tbhits", $info->{'tbhits' . $mpv};
458 if (exists($info->{'nodes' . $mpv}) && exists($info->{'nps' . $mpv}) && exists($info->{'depth' . $mpv})) {
459 $text .= sprintf " (%5u kn, %3u kn/s, %2u ply$tbhits)",
460 $info->{'nodes' . $mpv} / 1000, $info->{'nps' . $mpv} / 1000, $info->{'depth' . $mpv};
464 $text .= " " . join(', ', prettyprint_pv($pos_calculating->{'board'}, @{$info->{'pv' . $mpv}})) . "\n";
470 my $score = long_score($info, $pos_calculating, '');
471 $text .= " $score\n" if defined($score);
472 $text .= " PV: " . join(', ', prettyprint_pv($pos_calculating->{'board'}, @{$info->{'pv'}}));
475 if (exists($info->{'nodes'}) && exists($info->{'nps'}) && exists($info->{'depth'})) {
476 $text .= sprintf " %u nodes, %7u nodes/sec, depth %u ply",
477 $info->{'nodes'}, $info->{'nps'}, $info->{'depth'};
479 if (exists($info->{'seldepth'})) {
480 $text .= sprintf " (%u selective)", $info->{'seldepth'};
482 if (exists($info->{'tbhits'}) && $info->{'tbhits'} > 0) {
483 if ($info->{'tbhits'} == 1) {
484 $text .= ", one Syzygy hit";
486 $text .= sprintf ", %u Syzygy hits", $info->{'tbhits'};
492 #$text .= book_info($pos_calculating->fen(), $pos_calculating->{'board'}, $pos_calculating->{'toplay'});
494 my @refutation_lines = ();
495 if (defined($engine2)) {
496 for (my $mpv = 1; $mpv < 500; ++$mpv) {
497 my $info = $engine2->{'info'};
498 last if (!exists($info->{'pv' . $mpv}));
500 my $pv = $info->{'pv' . $mpv};
502 my $pretty_move = join('', prettyprint_pv($pos_calculating_second_engine->{'board'}, $pv->[0]));
503 my @pretty_pv = prettyprint_pv($pos_calculating_second_engine->{'board'}, @$pv);
504 if (scalar @pretty_pv > 5) {
505 @pretty_pv = @pretty_pv[0..4];
506 push @pretty_pv, "...";
508 my $key = $pretty_move;
509 my $line = sprintf(" %-6s %6s %3s %s",
511 short_score($info, $pos_calculating_second_engine, $mpv, 0),
512 "d" . $info->{'depth' . $mpv},
513 join(', ', @pretty_pv));
514 push @refutation_lines, [ $key, $line ];
519 if ($#refutation_lines >= 0) {
520 $text .= "Shallow search of all legal moves:\n\n";
521 for my $line (sort { $a->[0] cmp $b->[0] } @refutation_lines) {
522 $text .= $line->[1] . "\n";
527 if ($last_text ne $text) {
528 print "
\e[H
\e[2J"; # clear the screen
535 my $info = $engine->{'info'};
538 $json->{'position'} = $pos_calculating->to_json_hash();
539 $json->{'id'} = $engine->{'id'};
540 $json->{'score'} = long_score($info, $pos_calculating, '');
542 $json->{'nodes'} = $info->{'nodes'};
543 $json->{'nps'} = $info->{'nps'};
544 $json->{'depth'} = $info->{'depth'};
545 $json->{'tbhits'} = $info->{'tbhits'};
546 $json->{'seldepth'} = $info->{'seldepth'};
548 # single-PV only for now
549 $json->{'pv_uci'} = $info->{'pv'};
550 $json->{'pv_pretty'} = [ prettyprint_pv($pos_calculating->{'board'}, @{$info->{'pv'}}) ];
552 my %refutation_lines = ();
553 my @refutation_lines = ();
554 if (defined($engine2)) {
555 for (my $mpv = 1; $mpv < 500; ++$mpv) {
556 my $info = $engine2->{'info'};
557 my $pretty_move = "";
559 last if (!exists($info->{'pv' . $mpv}));
562 my $pv = $info->{'pv' . $mpv};
563 my $pretty_move = join('', prettyprint_pv($pos_calculating->{'board'}, $pv->[0]));
564 my @pretty_pv = prettyprint_pv($pos_calculating->{'board'}, @$pv);
565 $refutation_lines{$pv->[0]} = {
566 sort_key => $pretty_move,
567 depth => $info->{'depth' . $mpv},
568 score_sort_key => score_sort_key($info, $pos_calculating, $mpv, 0),
569 pretty_score => short_score($info, $pos_calculating, $mpv, 0),
570 pretty_move => $pretty_move,
571 pv_pretty => \@pretty_pv,
573 $refutation_lines{$pv->[0]}->{'pv_uci'} = $pv;
577 $json->{'refutation_lines'} = \%refutation_lines;
579 open my $fh, ">/srv/analysis.sesse.net/www/analysis.json.tmp"
581 print $fh JSON::XS::encode_json($json);
583 rename("/srv/analysis.sesse.net/www/analysis.json.tmp", "/srv/analysis.sesse.net/www/analysis.json");
587 my ($engine, $msg) = @_;
588 $engine->print($msg);
589 print UCILOG localtime() . " $engine->{'tag'} => $msg\n";
593 my ($info, $pos, $mpv, $invert) = @_;
596 if ($pos->{'toplay'} eq 'B') {
600 if (defined($info->{'score_mate' . $mpv})) {
602 return sprintf "M%3d", -$info->{'score_mate' . $mpv};
604 return sprintf "M%3d", $info->{'score_mate' . $mpv};
607 if (exists($info->{'score_cp' . $mpv})) {
608 my $score = $info->{'score_cp' . $mpv} * 0.01;
615 return sprintf "%+5.2f", $score;
623 my ($info, $pos, $mpv, $invert) = @_;
625 if (defined($info->{'score_mate' . $mpv})) {
627 return 99999 - $info->{'score_mate' . $mpv};
629 return -(99999 - $info->{'score_mate' . $mpv});
632 if (exists($info->{'score_cp' . $mpv})) {
633 my $score = $info->{'score_cp' . $mpv};
645 my ($info, $pos, $mpv) = @_;
647 if (defined($info->{'score_mate' . $mpv})) {
648 my $mate = $info->{'score_mate' . $mpv};
649 if ($pos->{'toplay'} eq 'B') {
653 return sprintf "White mates in %u", $mate;
655 return sprintf "Black mates in %u", -$mate;
658 if (exists($info->{'score_cp' . $mpv})) {
659 my $score = $info->{'score_cp' . $mpv} * 0.01;
661 return "Score: 0.00";
663 if ($pos->{'toplay'} eq 'B') {
666 return sprintf "Score: %+5.2f", $score;
675 my ($fen, $board, $toplay) = @_;
677 if (exists($book_cache{$fen})) {
678 return $book_cache{$fen};
681 my $ret = `./booklook $fen`;
682 return "" if ($ret =~ /Not found/ || $ret eq '');
686 for my $m (split /\n/, $ret) {
687 my ($move, $annotation, $win, $draw, $lose, $rating, $rating_div) = split /,/, $m;
691 $pmove = '(current)';
693 ($pmove) = prettyprint_pv($board, $move);
694 $pmove .= $annotation;
698 if ($toplay eq 'W') {
699 $score = 1.0 * $win + 0.5 * $draw + 0.0 * $lose;
701 $score = 0.0 * $win + 0.5 * $draw + 1.0 * $lose;
703 my $n = $win + $draw + $lose;
709 $percent = sprintf "%4u%%", int(100.0 * $score / $n + 0.5);
712 push @moves, [ $pmove, $n, $percent, $rating ];
715 @moves[1..$#moves] = sort { $b->[2] cmp $a->[2] } @moves[1..$#moves];
717 my $text = "Book moves:\n\n Perf. N Rating\n\n";
719 $text .= sprintf " %-10s %s %6u %4s\n", $m->[0], $m->[2], $m->[1], $m->[3]
726 my ($cmdline, $tag, $cb) = @_;
727 return undef if (!defined($cmdline));
728 return Engine->open($cmdline, $tag, $cb);
731 sub col_letter_to_num {
732 return ord(shift) - ord('a');
735 sub row_letter_to_num {
736 return 7 - (ord(shift) - ord('1'));
741 my $from_col = col_letter_to_num(substr($move, 0, 1));
742 my $from_row = row_letter_to_num(substr($move, 1, 1));
743 my $to_col = col_letter_to_num(substr($move, 2, 1));
744 my $to_row = row_letter_to_num(substr($move, 3, 1));
745 my $promo = substr($move, 4, 1);
746 return ($from_col, $from_row, $to_col, $to_row, $promo);