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(@_, $url);
180 } elsif ($msg =~ /^stoppgn$/) {
181 $t->cmd("tell $who Stopping poll.");
183 } elsif ($msg =~ /^quit$/) {
184 $t->cmd("tell $who Bye bye.");
187 $t->cmd("tell $who Couldn't understand '$msg', sorry.");
190 #print "FICS: [$line]\n";
194 my ($body, $header, $url) = @_;
195 my $pgn = Chess::PGN::Parse->new(undef, $body);
196 if (!defined($pgn) || !$pgn->read_game()) {
197 warn "Error in parsing PGN from $url\n";
199 $pgn->quick_parse_game;
200 my $pos = Position->start_pos($pgn->white, $pgn->black);
201 my $moves = $pgn->moves;
202 for my $move (@$moves) {
203 my ($from_row, $from_col, $to_row, $to_col, $promo) = $pos->parse_pretty_move($move);
204 $pos = $pos->make_move($from_row, $from_col, $to_row, $to_col, $promo);
206 handle_position($pos);
209 $http_timer = AnyEvent->timer(after => 1.0, cb => sub {
210 AnyEvent::HTTP::http_get($url, sub {
211 handle_pgn(@_, $url);
216 sub handle_position {
219 # if this is already in the queue, ignore it
220 return if (defined($pos_waiting) && $pos->fen() eq $pos_waiting->fen());
222 # if we're already chewing on this and there's nothing else in the queue,
224 return if (!defined($pos_waiting) && defined($pos_calculating) &&
225 $pos->fen() eq $pos_calculating->fen());
227 # if we're already thinking on something, stop and wait for the engine
229 if (defined($pos_calculating)) {
230 if (!defined($pos_waiting)) {
231 uciprint($engine, "stop");
233 if ($uci_assume_full_compliance) {
236 uciprint($engine, "position fen " . $pos->fen());
237 uciprint($engine, "go infinite");
238 $pos_calculating = $pos;
241 # it's wrong just to give the FEN (the move history is useful,
242 # and per the UCI spec, we should really have sent "ucinewgame"),
244 uciprint($engine, "position fen " . $pos->fen());
245 uciprint($engine, "go infinite");
246 $pos_calculating = $pos;
249 if (defined($engine2)) {
250 if (defined($pos_calculating_second_engine)) {
251 uciprint($engine2, "stop");
253 uciprint($engine2, "position fen " . $pos->fen());
254 uciprint($engine2, "go infinite");
255 $pos_calculating_second_engine = $pos;
257 $engine2->{'info'} = {};
260 $engine->{'info'} = {};
264 # Output a command every move to note that we're
265 # still paying attention -- this is a good tradeoff,
266 # since if no move has happened in the last half
267 # hour, the analysis/relay has most likely stopped
268 # and we should stop hogging server resources.
274 my ($engine, @x) = @_;
277 my $info = $engine->{'info'};
279 # Search for "multipv" first of all, since e.g. Stockfish doesn't put it first.
280 for my $i (0..$#x - 1) {
281 if ($x[$i] eq 'multipv') {
287 while (scalar @x > 0) {
288 if ($x[0] eq 'multipv') {
294 if ($x[0] eq 'currmove' || $x[0] eq 'currmovenumber' || $x[0] eq 'cpuload') {
296 my $value = shift @x;
297 $info->{$key} = $value;
300 if ($x[0] eq 'depth' || $x[0] eq 'seldepth' || $x[0] eq 'hashfull' ||
301 $x[0] eq 'time' || $x[0] eq 'nodes' || $x[0] eq 'nps' ||
304 my $value = shift @x;
305 $info->{$key . $mpv} = $value;
308 if ($x[0] eq 'score') {
311 delete $info->{'score_cp' . $mpv};
312 delete $info->{'score_mate' . $mpv};
314 while ($x[0] eq 'cp' || $x[0] eq 'mate' || $x[0] eq 'lowerbound' || $x[0] eq 'upperbound') {
317 $info->{'score_cp' . $mpv} = shift @x;
318 } elsif ($x[0] eq 'mate') {
320 $info->{'score_mate' . $mpv} = shift @x;
328 $info->{'pv' . $mpv} = [ @x[1..$#x] ];
331 if ($x[0] eq 'string' || $x[0] eq 'UCI_AnalyseMode' || $x[0] eq 'setting' || $x[0] eq 'contempt') {
335 #print "unknown info '$x[0]', trying to recover...\n";
337 die "Unknown info '" . join(',', @x) . "'";
343 my ($engine, @x) = @_;
345 while (scalar @x > 0) {
346 if ($x[0] =~ /^(name|author)$/) {
348 my $value = join(' ', @x);
349 $engine->{'id'}{$key} = $value;
358 sub prettyprint_pv_no_cache {
359 my ($board, @pvs) = @_;
361 if (scalar @pvs == 0 || !defined($pvs[0])) {
366 my ($from_col, $from_row, $to_col, $to_row, $promo) = parse_uci_move($pv);
367 my ($pretty, $nb) = $board->prettyprint_move($from_row, $from_col, $to_row, $to_col, $promo);
368 return ( $pretty, prettyprint_pv_no_cache($nb, @pvs) );
372 my ($pos, @pvs) = @_;
374 my $cachekey = join('', @pvs);
375 if (exists($pos->{'prettyprint_cache'}{$cachekey})) {
376 return @{$pos->{'prettyprint_cache'}{$cachekey}};
378 my @res = prettyprint_pv_no_cache($pos->{'board'}, @pvs);
379 $pos->{'prettyprint_cache'}{$cachekey} = \@res;
387 return if (!defined($pos_calculating));
389 # Don't update too often.
390 my $age = Time::HiRes::tv_interval($latest_update);
391 if ($age < $update_max_interval) {
392 Time::HiRes::alarm($update_max_interval + 0.01 - $age);
396 my $info = $engine->{'info'};
399 # Some programs _always_ report MultiPV, even with only one PV.
400 # In this case, we simply use that data as if MultiPV was never
403 if (exists($info->{'pv1'}) && !exists($info->{'pv2'})) {
404 for my $key (qw(pv score_cp score_mate nodes nps depth seldepth tbhits)) {
405 if (exists($info->{$key . '1'})) {
406 $info->{$key} = $info->{$key . '1'};
412 # Check the PVs first. if they're invalid, just wait, as our data
413 # is most likely out of sync. This isn't a very good solution, as
414 # it can frequently miss stuff, but it's good enough for most users.
418 if (exists($info->{'pv'})) {
419 $dummy = prettyprint_pv($pos_calculating, @{$info->{'pv'}});
423 while (exists($info->{'pv' . $mpv})) {
424 $dummy = prettyprint_pv($pos_calculating, @{$info->{'pv' . $mpv}});
429 $engine->{'info'} = {};
435 $latest_update = [Time::HiRes::gettimeofday];
439 my $info = $engine->{'info'};
440 my $id = $engine->{'id'};
442 my $text = 'Analysis';
443 if ($pos_calculating->{'last_move'} ne 'none') {
444 if ($pos_calculating->{'toplay'} eq 'W') {
445 $text .= sprintf ' after %u. ... %s', ($pos_calculating->{'move_num'}-1), $pos_calculating->{'last_move'};
447 $text .= sprintf ' after %u. %s', $pos_calculating->{'move_num'}, $pos_calculating->{'last_move'};
449 if (exists($id->{'name'})) {
454 if (exists($id->{'name'})) {
455 $text .= " by $id->{'name'}:\n\n";
460 return unless (exists($pos_calculating->{'board'}));
462 if (exists($info->{'pv1'}) && exists($info->{'pv2'})) {
465 while (exists($info->{'pv' . $mpv})) {
466 $text .= sprintf " PV%2u", $mpv;
467 my $score = short_score($info, $pos_calculating, $mpv);
468 $text .= " ($score)" if (defined($score));
471 if (exists($info->{'tbhits' . $mpv}) && $info->{'tbhits' . $mpv} > 0) {
472 if ($info->{'tbhits' . $mpv} == 1) {
473 $tbhits = ", 1 tbhit";
475 $tbhits = sprintf ", %u tbhits", $info->{'tbhits' . $mpv};
479 if (exists($info->{'nodes' . $mpv}) && exists($info->{'nps' . $mpv}) && exists($info->{'depth' . $mpv})) {
480 $text .= sprintf " (%5u kn, %3u kn/s, %2u ply$tbhits)",
481 $info->{'nodes' . $mpv} / 1000, $info->{'nps' . $mpv} / 1000, $info->{'depth' . $mpv};
485 $text .= " " . join(', ', prettyprint_pv($pos_calculating, @{$info->{'pv' . $mpv}})) . "\n";
491 my $score = long_score($info, $pos_calculating, '');
492 $text .= " $score\n" if defined($score);
493 $text .= " PV: " . join(', ', prettyprint_pv($pos_calculating, @{$info->{'pv'}}));
496 if (exists($info->{'nodes'}) && exists($info->{'nps'}) && exists($info->{'depth'})) {
497 $text .= sprintf " %u nodes, %7u nodes/sec, depth %u ply",
498 $info->{'nodes'}, $info->{'nps'}, $info->{'depth'};
500 if (exists($info->{'seldepth'})) {
501 $text .= sprintf " (%u selective)", $info->{'seldepth'};
503 if (exists($info->{'tbhits'}) && $info->{'tbhits'} > 0) {
504 if ($info->{'tbhits'} == 1) {
505 $text .= ", one Syzygy hit";
507 $text .= sprintf ", %u Syzygy hits", $info->{'tbhits'};
513 #$text .= book_info($pos_calculating->fen(), $pos_calculating->{'board'}, $pos_calculating->{'toplay'});
515 my @refutation_lines = ();
516 if (defined($engine2)) {
517 for (my $mpv = 1; $mpv < 500; ++$mpv) {
518 my $info = $engine2->{'info'};
519 last if (!exists($info->{'pv' . $mpv}));
521 my $pv = $info->{'pv' . $mpv};
523 my $pretty_move = join('', prettyprint_pv($pos_calculating_second_engine, $pv->[0]));
524 my @pretty_pv = prettyprint_pv($pos_calculating_second_engine, @$pv);
525 if (scalar @pretty_pv > 5) {
526 @pretty_pv = @pretty_pv[0..4];
527 push @pretty_pv, "...";
529 my $key = $pretty_move;
530 my $line = sprintf(" %-6s %6s %3s %s",
532 short_score($info, $pos_calculating_second_engine, $mpv, 0),
533 "d" . $info->{'depth' . $mpv},
534 join(', ', @pretty_pv));
535 push @refutation_lines, [ $key, $line ];
540 if ($#refutation_lines >= 0) {
541 $text .= "Shallow search of all legal moves:\n\n";
542 for my $line (sort { $a->[0] cmp $b->[0] } @refutation_lines) {
543 $text .= $line->[1] . "\n";
548 if ($last_text ne $text) {
549 print "
\e[H
\e[2J"; # clear the screen
556 my $info = $engine->{'info'};
559 $json->{'position'} = $pos_calculating->to_json_hash();
560 $json->{'id'} = $engine->{'id'};
561 $json->{'score'} = long_score($info, $pos_calculating, '');
563 $json->{'nodes'} = $info->{'nodes'};
564 $json->{'nps'} = $info->{'nps'};
565 $json->{'depth'} = $info->{'depth'};
566 $json->{'tbhits'} = $info->{'tbhits'};
567 $json->{'seldepth'} = $info->{'seldepth'};
569 # single-PV only for now
570 $json->{'pv_uci'} = $info->{'pv'};
571 $json->{'pv_pretty'} = [ prettyprint_pv($pos_calculating, @{$info->{'pv'}}) ];
573 my %refutation_lines = ();
574 my @refutation_lines = ();
575 if (defined($engine2)) {
576 for (my $mpv = 1; $mpv < 500; ++$mpv) {
577 my $info = $engine2->{'info'};
578 my $pretty_move = "";
580 last if (!exists($info->{'pv' . $mpv}));
583 my $pv = $info->{'pv' . $mpv};
584 my $pretty_move = join('', prettyprint_pv($pos_calculating, $pv->[0]));
585 my @pretty_pv = prettyprint_pv($pos_calculating, @$pv);
586 $refutation_lines{$pv->[0]} = {
587 sort_key => $pretty_move,
588 depth => $info->{'depth' . $mpv},
589 score_sort_key => score_sort_key($info, $pos_calculating, $mpv, 0),
590 pretty_score => short_score($info, $pos_calculating, $mpv, 0),
591 pretty_move => $pretty_move,
592 pv_pretty => \@pretty_pv,
594 $refutation_lines{$pv->[0]}->{'pv_uci'} = $pv;
598 $json->{'refutation_lines'} = \%refutation_lines;
600 open my $fh, ">/srv/analysis.sesse.net/www/analysis.json.tmp"
602 print $fh JSON::XS::encode_json($json);
604 rename("/srv/analysis.sesse.net/www/analysis.json.tmp", "/srv/analysis.sesse.net/www/analysis.json");
608 my ($engine, $msg) = @_;
609 $engine->print($msg);
610 print UCILOG localtime() . " $engine->{'tag'} => $msg\n";
614 my ($info, $pos, $mpv, $invert) = @_;
617 if ($pos->{'toplay'} eq 'B') {
621 if (defined($info->{'score_mate' . $mpv})) {
623 return sprintf "M%3d", -$info->{'score_mate' . $mpv};
625 return sprintf "M%3d", $info->{'score_mate' . $mpv};
628 if (exists($info->{'score_cp' . $mpv})) {
629 my $score = $info->{'score_cp' . $mpv} * 0.01;
636 return sprintf "%+5.2f", $score;
644 my ($info, $pos, $mpv, $invert) = @_;
646 if (defined($info->{'score_mate' . $mpv})) {
648 return 99999 - $info->{'score_mate' . $mpv};
650 return -(99999 - $info->{'score_mate' . $mpv});
653 if (exists($info->{'score_cp' . $mpv})) {
654 my $score = $info->{'score_cp' . $mpv};
666 my ($info, $pos, $mpv) = @_;
668 if (defined($info->{'score_mate' . $mpv})) {
669 my $mate = $info->{'score_mate' . $mpv};
670 if ($pos->{'toplay'} eq 'B') {
674 return sprintf "White mates in %u", $mate;
676 return sprintf "Black mates in %u", -$mate;
679 if (exists($info->{'score_cp' . $mpv})) {
680 my $score = $info->{'score_cp' . $mpv} * 0.01;
682 return "Score: 0.00";
684 if ($pos->{'toplay'} eq 'B') {
687 return sprintf "Score: %+5.2f", $score;
696 my ($fen, $board, $toplay) = @_;
698 if (exists($book_cache{$fen})) {
699 return $book_cache{$fen};
702 my $ret = `./booklook $fen`;
703 return "" if ($ret =~ /Not found/ || $ret eq '');
707 for my $m (split /\n/, $ret) {
708 my ($move, $annotation, $win, $draw, $lose, $rating, $rating_div) = split /,/, $m;
712 $pmove = '(current)';
714 ($pmove) = prettyprint_pv_no_cache($board, $move);
715 $pmove .= $annotation;
719 if ($toplay eq 'W') {
720 $score = 1.0 * $win + 0.5 * $draw + 0.0 * $lose;
722 $score = 0.0 * $win + 0.5 * $draw + 1.0 * $lose;
724 my $n = $win + $draw + $lose;
730 $percent = sprintf "%4u%%", int(100.0 * $score / $n + 0.5);
733 push @moves, [ $pmove, $n, $percent, $rating ];
736 @moves[1..$#moves] = sort { $b->[2] cmp $a->[2] } @moves[1..$#moves];
738 my $text = "Book moves:\n\n Perf. N Rating\n\n";
740 $text .= sprintf " %-10s %s %6u %4s\n", $m->[0], $m->[2], $m->[1], $m->[3]
747 my ($cmdline, $tag, $cb) = @_;
748 return undef if (!defined($cmdline));
749 return Engine->open($cmdline, $tag, $cb);
752 sub col_letter_to_num {
753 return ord(shift) - ord('a');
756 sub row_letter_to_num {
757 return 7 - (ord(shift) - ord('1'));
762 my $from_col = col_letter_to_num(substr($move, 0, 1));
763 my $from_row = row_letter_to_num(substr($move, 1, 1));
764 my $to_col = col_letter_to_num(substr($move, 2, 1));
765 my $to_row = row_letter_to_num(substr($move, 3, 1));
766 my $promo = substr($move, 4, 1);
767 return ($from_col, $from_row, $to_col, $to_row, $promo);