# analysis, or for live analysis of relayed games. (Do not use for
# cheating! Cheating is bad for your karma, and your abuser flag.)
#
-# Copyright 2007 Steinar H. Gunderson <sgunderson@bigfoot.com>
+# Copyright 2007 Steinar H. Gunderson <steinar+remoteglot@gunderson.no>
# Licensed under the GNU General Public License, version 2.
#
use Chess::PGN::Parse;
use EV;
use Net::Telnet;
-use FileHandle;
+use File::Slurp;
use IPC::Open2;
use Time::HiRes;
use JSON::XS;
use URI::Escape;
-use Tie::Persistent;
use DBI;
use DBD::Pg;
require 'Position.pm';
$| = 1;
select(STDOUT);
+umask 0022;
# open the chess engine
my $engine = open_engine($remoteglotconf::engine_cmdline, 'E1', sub { handle_uci(@_, 1); });
}
my $pgn = Chess::PGN::Parse->new(undef, $body);
- if (!defined($pgn) || !$pgn->read_game() || $body !~ /^\[/) {
- warn "Error in parsing PGN from $url\n";
+ if (!defined($pgn)) {
+ warn "Error in parsing PGN from $url [body='$body']\n";
+ } elsif (!$pgn->read_game()) {
+ warn "Error in reading PGN game from $url [body='$body']\n";
+ } elsif ($body !~ /^\[/) {
+ warn "Malformed PGN from $url [body='$body']\n";
} else {
eval {
# Skip to the right game.
my $pos = Position->start_pos($pgn->white, $pgn->black);
my $moves = $pgn->moves;
my @uci_moves = ();
+ my @repretty_moves = ();
for my $move (@$moves) {
- my $uci_move;
- ($pos, $uci_move) = $pos->make_pretty_move($move);
+ my ($npos, $uci_move) = $pos->make_pretty_move($move);
push @uci_moves, $uci_move;
+
+ # Re-prettyprint the move.
+ my ($from_row, $from_col, $to_row, $to_col, $promo) = parse_uci_move($uci_move);
+ my ($pretty, undef) = $pos->{'board'}->prettyprint_move($from_row, $from_col, $to_row, $to_col, $promo);
+ push @repretty_moves, $pretty;
+ $pos = $npos;
}
$pos->{'result'} = $pgn->result;
- $pos->{'pretty_history'} = $moves;
+ $pos->{'pretty_history'} = \@repretty_moves;
extract_clock($pgn, $pos);
my ($engine, @x) = @_;
while (scalar @x > 0) {
- if ($x[0] =~ /^(name|author)$/) {
- my $key = shift @x;
+ if ($x[0] eq 'name') {
my $value = join(' ', @x);
- $engine->{'id'}{$key} = $value;
+ $engine->{'id'}{'author'} = $value;
last;
}
}
my $pv = shift @pvs;
- my ($from_col, $from_row, $to_col, $to_row, $promo) = parse_uci_move($pv);
+ my ($from_row, $from_col, $to_row, $to_col, $promo) = parse_uci_move($pv);
my ($pretty, $nb) = $board->prettyprint_move($from_row, $from_col, $to_row, $to_col, $promo);
return ( $pretty, prettyprint_pv_no_cache($nb, @pvs) );
}
}
}
+sub complete_using_tbprobe {
+ my ($pos, $info, $mpv) = @_;
+
+ # We need Fathom installed to do standalone TB probes.
+ return if (!defined($remoteglotconf::fathom_cmdline));
+
+ # If we already have a mate, don't bother; in some cases, it would even be
+ # better than a tablebase score.
+ return if defined($info->{'score_mate' . $mpv});
+
+ # If we have a draw or near-draw score, there's also not much interesting
+ # we could add from a tablebase. We only really want mates.
+ return if ($info->{'score_cp' . $mpv} >= -12250 && $info->{'score_cp' . $mpv} <= 12250);
+
+ # Run through the PV until we are at a 6-man position.
+ # TODO: We could in theory only have 5-man data.
+ my @pv = @{$info->{'pv' . $mpv}};
+ my $key = join('', @pv);
+ my @moves = ();
+ if (exists($pos->{'tbprobe_cache'}{$key})) {
+ @moves = $pos->{'tbprobe_cache'}{$key};
+ } else {
+ while ($pos->num_pieces() > 6 && $#pv > -1) {
+ my $move = shift @pv;
+ push @moves, $move;
+ $pos = $pos->make_move(parse_uci_move($move));
+ }
+
+ return if ($pos->num_pieces() > 6);
+
+ my $fen = $pos->fen();
+ my $pgn_text = `fathom --path=/srv/syzygy "$fen"`;
+ my $pgn = Chess::PGN::Parse->new(undef, $pgn_text);
+ return if (!defined($pgn) || !$pgn->read_game() || ($pgn->result ne '0-1' && $pgn->result ne '1-0'));
+ $pgn->quick_parse_game;
+ $info->{'pv' . $mpv} = \@moves;
+
+ # Splice the PV from the tablebase onto what we have so far.
+ for my $move (@{$pgn->moves}) {
+ my $uci_move;
+ ($pos, $uci_move) = $pos->make_pretty_move($move);
+ push @moves, $uci_move;
+ }
+ }
+
+ $info->{'pv' . $mpv} = \@moves;
+
+ my $matelen = int((1 + scalar @moves) / 2);
+ if ((scalar @moves) % 2 == 0) {
+ $info->{'score_mate' . $mpv} = -$matelen;
+ } else {
+ $info->{'score_mate' . $mpv} = $matelen;
+ }
+}
+
sub output {
#return;
for my $key (qw(pv score_cp score_mate nodes nps depth seldepth tbhits)) {
if (exists($info->{$key . '1'})) {
$info->{$key} = $info->{$key . '1'};
+ } else {
+ delete $info->{$key};
}
}
}
return;
}
+ # Now do our own Syzygy tablebase probes to convert scores like +123.45 to mate.
+ if (exists($info->{'pv'})) {
+ complete_using_tbprobe($pos_calculating, $info, '');
+ }
+
+ my $mpv = 1;
+ while (exists($info->{'pv' . $mpv})) {
+ complete_using_tbprobe($pos_calculating, $info, $mpv);
+ ++$mpv;
+ }
+
output_screen();
output_json(0);
$latest_update = [Time::HiRes::gettimeofday];
my $info = $engine2->{'info'};
last if (!exists($info->{'pv' . $mpv}));
eval {
+ complete_using_tbprobe($pos_calculating_second_engine, $info, $mpv);
my $pv = $info->{'pv' . $mpv};
-
my $pretty_move = join('', prettyprint_pv($pos_calculating_second_engine, $pv->[0]));
my @pretty_pv = prettyprint_pv($pos_calculating_second_engine, @$pv);
if (scalar @pretty_pv > 5) {
my $json = {};
$json->{'position'} = $pos_calculating->to_json_hash();
- $json->{'id'} = $engine->{'id'};
+ $json->{'engine'} = $engine->{'id'};
+ if (defined($remoteglotconf::engine_url)) {
+ $json->{'engine'}{'url'} = $remoteglotconf::engine_url;
+ }
+ if (defined($remoteglotconf::engine_details)) {
+ $json->{'engine'}{'details'} = $remoteglotconf::engine_details;
+ }
+ if (defined($remoteglotconf::move_source)) {
+ $json->{'move_source'} = $remoteglotconf::move_source;
+ }
+ if (defined($remoteglotconf::move_source_url)) {
+ $json->{'move_source_url'} = $remoteglotconf::move_source_url;
+ }
$json->{'score'} = long_score($info, $pos_calculating, '');
$json->{'short_score'} = short_score($info, $pos_calculating, '');
$json->{'plot_score'} = plot_score($info, $pos_calculating, '');
+ $json->{'using_lomonosov'} = defined($remoteglotconf::tb_serial_key);
$json->{'nodes'} = $info->{'nodes'};
$json->{'nps'} = $info->{'nps'};
last if (!exists($info->{'pv' . $mpv}));
eval {
+ complete_using_tbprobe($pos_calculating, $info, $mpv);
my $pv = $info->{'pv' . $mpv};
my $pretty_move = join('', prettyprint_pv($pos_calculating, $pv->[0]));
my @pretty_pv = prettyprint_pv($pos_calculating, @$pv);
$refutation_lines{$pv->[0]} = {
sort_key => $pretty_move,
depth => $info->{'depth' . $mpv},
- score_sort_key => score_sort_key($info, $pos_calculating, $mpv, 0),
+ score_sort_key => score_sort_key($info, $mpv, 0),
pretty_score => short_score($info, $pos_calculating, $mpv),
pretty_move => $pretty_move,
pv_pretty => \@pretty_pv,
$json->{'score_history'} = \%score_history;
}
+ # Give out a list of other games going on. (Empty is fine.)
+ if (!$historic_json_only) {
+ my @games = ();
+
+ my $q = $dbh->prepare('SELECT * FROM current_games ORDER BY priority DESC, id');
+ $q->execute;
+ while (my $ref = $q->fetchrow_hashref) {
+ eval {
+ my $other_game_contents = File::Slurp::read_file($ref->{'json_path'});
+ my $other_game_json = JSON::XS::decode_json($other_game_contents);
+
+ die "Missing position" if (!exists($other_game_json->{'position'}));
+ my $white = $other_game_json->{'position'}{'player_w'} // die 'Missing white';
+ my $black = $other_game_json->{'position'}{'player_b'} // die 'Missing black';
+
+ push @games, {
+ id => $ref->{'id'},
+ name => "$white–$black",
+ url => $ref->{'url'}
+ };
+ };
+ if ($@) {
+ warn "Could not add external game " . $ref->{'json_path'} . ": $@";
+ }
+ }
+
+ if (scalar @games > 0) {
+ $json->{'games'} = \@games;
+ }
+ }
+
my $json_enc = JSON::XS->new;
$json_enc->canonical(1);
my $encoded = $json_enc->encode($json);
my $new_depth = $json->{'depth'} // 0;
my $new_nodes = $json->{'nodes'} // 0;
if (!defined($old_engine) ||
- $old_engine ne $json->{'id'}{'name'} ||
+ $old_engine ne $json->{'engine'}{'name'} ||
$new_depth > $old_depth ||
($new_depth == $old_depth && $new_nodes >= $old_nodes)) {
atomic_set_contents($filename, $encoded);
if (defined($json->{'plot_score'})) {
- local $dbh->{AutoCommit} = 0;
- $dbh->do('DELETE FROM scores WHERE id=?', undef, $id);
- $dbh->do('INSERT INTO scores (id, plot_score, short_score, engine, depth, nodes) VALUES (?,?,?,?,?,?)', undef,
+ $dbh->do('INSERT INTO scores (id, plot_score, short_score, engine, depth, nodes) VALUES (?,?,?,?,?,?) ' .
+ ' ON CONFLICT (id) DO UPDATE SET ' .
+ ' plot_score=EXCLUDED.plot_score, ' .
+ ' short_score=EXCLUDED.short_score, ' .
+ ' engine=EXCLUDED.engine, ' .
+ ' depth=EXCLUDED.depth, ' .
+ ' nodes=EXCLUDED.nodes',
+ undef,
$id, $json->{'plot_score'}, $json->{'short_score'},
- $json->{'id'}{'name'}, $new_depth, $new_nodes);
- $dbh->commit;
+ $json->{'engine'}{'name'}, $new_depth, $new_nodes);
}
}
}
}
sub score_sort_key {
- my ($info, $pos, $mpv, $invert) = @_;
+ my ($info, $mpv, $invert) = @_;
if (defined($info->{'score_mate' . $mpv})) {
my $mate = $info->{'score_mate' . $mpv};
}
local $dbh->{AutoCommit} = 0;
$dbh->do('DELETE FROM clock_info WHERE id=?', undef, $id);
- $dbh->do('INSERT INTO clock_info (id, white_clock, black_clock, white_clock_target, black_clock_target)', undef,
+ $dbh->do('INSERT INTO clock_info (id, white_clock, black_clock, white_clock_target, black_clock_target) VALUES (?, ?, ?, ?, ?)', undef,
$id, $pos->{'white_clock'}, $pos->{'black_clock'}, $white_clock_target, $black_clock_target);
$dbh->commit;
}
my $to_col = col_letter_to_num(substr($move, 2, 1));
my $to_row = row_letter_to_num(substr($move, 3, 1));
my $promo = substr($move, 4, 1);
- return ($from_col, $from_row, $to_col, $to_row, $promo);
+ return ($from_row, $from_col, $to_row, $to_col, $promo);
}