X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=remoteglot.pl;h=8b3a0b776f40678ae3c6e58244580a5fd6e32c60;hb=8733e976299634c8bce83bc8908a99ff669bc2fd;hp=66fb2ff7bb83f3cfce508f1c267a59f796988403;hpb=bdf7fb246fa3fcf64350d8edd3f3a9ea9c32f46f;p=remoteglot

diff --git a/remoteglot.pl b/remoteglot.pl
index 66fb2ff..8b3a0b7 100755
--- a/remoteglot.pl
+++ b/remoteglot.pl
@@ -35,7 +35,6 @@ my $output_timer = undef;
 my $http_timer = undef;
 my $stop_pgn_fetch = 0;
 my $tb_retry_timer = undef;
-my %tb_cache = ();
 my $tb_lookup_running = 0;
 my $last_written_json = undef;
 
@@ -76,17 +75,20 @@ my $last_move;
 my $last_text = '';
 my ($pos_calculating, $pos_calculating_second_engine);
 
-uciprint($engine, "setoption name UCI_AnalyseMode value true");
-while (my ($key, $value) = each %remoteglotconf::engine_config) {
-	uciprint($engine, "setoption name $key value $value");
-}
+# If not undef, we've started calculating this position but haven't ever given out
+# any analysis for it, so we're on a forced timer to do so.
+my $pos_calculating_started = undef;
+
+# If not undef, we've output this position, but without a main PV, so we're on
+# _another_ forced timer to do so.
+my $pos_pv_started = undef;
+my $last_output_had_pv = 0;
+
+setoptions($engine, \%remoteglotconf::engine_config);
 uciprint($engine, "ucinewgame");
 
 if (defined($engine2)) {
-	uciprint($engine2, "setoption name UCI_AnalyseMode value true");
-	while (my ($key, $value) = each %remoteglotconf::engine2_config) {
-		uciprint($engine2, "setoption name $key value $value");
-	}
+	setoptions($engine2, \%remoteglotconf::engine2_config);
 	uciprint($engine2, "setoption name MultiPV value 500");
 	uciprint($engine2, "ucinewgame");
 }
@@ -124,7 +126,7 @@ if (defined($remoteglotconf::server)) {
 	);
 }
 if (defined($remoteglotconf::target)) {
-	if ($remoteglotconf::target =~ /^https?:/) {
+	if ($remoteglotconf::target =~ /^(?:\/|https?:)/) {
 		fetch_pgn($remoteglotconf::target);
 	} elsif (defined($t)) {
 		$t->cmd("observe $remoteglotconf::target");
@@ -149,7 +151,7 @@ sub handle_uci {
 	return if ($engine->{'stopping'} && $line !~ /^bestmove/);
 	$engine->{'stopping'} = 0;
 
-	if ($line =~ /^info/) {
+	if ($line =~ /^info/ && $line !~ / cluster /) {
 		my (@infos) = split / /, $line;
 		shift @infos;
 
@@ -248,9 +250,26 @@ sub handle_fics {
 # Starts periodic fetching of PGNs from the given URL.
 sub fetch_pgn {
 	my ($url) = @_;
-	AnyEvent::HTTP::http_get($url, sub {
-		handle_pgn(@_, $url);
-	});
+	if ($url =~ m#^/#) {  # Local file.
+		eval {
+			local $/ = undef;
+			open my $fh, "<", $url
+				or die "$url: $!";
+			my $pgn = <$fh>;
+			close $fh;
+			handle_pgn($pgn, '', $url);
+		};
+		if ($@) {
+			warn "$url: $@";
+			$http_timer = AnyEvent->timer(after => 1.0, cb => sub {
+				fetch_pgn($url);
+			});
+		}
+	} else {
+		AnyEvent::HTTP::http_get($url, sub {
+			handle_pgn(@_, $url);
+		});
+	}
 }
 
 my ($last_pgn_white, $last_pgn_black);
@@ -290,6 +309,7 @@ sub handle_pgn {
 			my $pos;
 			if (exists($tags->{'FEN'})) {
 				$pos = Position->from_fen($tags->{'FEN'});
+				$pos->{'last_move'} = 'none';
 				$pos->{'player_w'} = $white;
 				$pos->{'player_b'} = $black;
 				$pos->{'start_fen'} = $tags->{'FEN'};
@@ -299,6 +319,8 @@ sub handle_pgn {
 			if (exists($tags->{'Variant'}) &&
 			    $tags->{'Variant'} =~ /960|fischer/i) {
 				$pos->{'chess960'} = 1;
+			} else {
+				$pos->{'chess960'} = 0;
 			}
 			my $moves = $pgn->moves;
 			my @uci_moves = ();
@@ -316,9 +338,12 @@ sub handle_pgn {
 			if ($pgn->result eq '1-0' || $pgn->result eq '1/2-1/2' || $pgn->result eq '0-1') {
 				$pos->{'result'} = $pgn->result;
 			}
-			$pos->{'history'} = \@repretty_moves;
 
+			my @extra_moves = ();
+			$pos = extend_from_manual_override($pos, \@repretty_moves, \@extra_moves);
 			extract_clock($pgn, $pos);
+			$pos->{'history'} = \@repretty_moves;
+			$pos->{'extra_moves'} = \@extra_moves;
 
 			# Sometimes, PGNs lose a move or two for a short while,
 			# or people push out new ones non-atomically. 
@@ -374,12 +399,23 @@ sub handle_position {
 		# the position.)
 		#
 		# Do not output anything new to the main analysis; that's
-		# going to be obsolete really soon.
+		# going to be obsolete really soon. (Exception: If we've never
+		# output anything for this move, ie., it didn't hit the 200ms
+		# limit, spit it out to the user anyway. It's probably a really
+		# fast blitz game or something, and it's good to show the moves
+		# as they come in even without great analysis.)
 		$pos_calculating->{'white_clock'} = $pos->{'white_clock'};
 		$pos_calculating->{'black_clock'} = $pos->{'black_clock'};
 		delete $pos_calculating->{'white_clock_target'};
 		delete $pos_calculating->{'black_clock_target'};
-		output_json(1);
+
+		if (defined($pos_calculating_started)) {
+			output_json(0);
+		} else {
+			output_json(1);
+		}
+		$pos_calculating_started = [Time::HiRes::gettimeofday];
+		$pos_pv_started = undef;
 
 		# Ask the engine to stop; we will throw away its data until it
 		# sends us "bestmove", signaling the end of it.
@@ -390,22 +426,24 @@ sub handle_position {
 	# It's wrong to just give the FEN (the move history is useful,
 	# and per the UCI spec, we should really have sent "ucinewgame"),
 	# but it's easier, and it works around a Stockfish repetition issue.
-	if ($engine->{'chess960'} != $pos->is_chess960()) {
-		uciprint($engine, "setoption UCI_Chess960 " . ($pos->is_chess960() ? 'true' : 'false'));
-		$engine->{'chess960'} = $pos->is_chess960();
+	if ($engine->{'chess960'} != $pos->{'chess960'}) {
+		uciprint($engine, "setoption name UCI_Chess960 value " . ($pos->{'chess960'} ? 'true' : 'false'));
+		$engine->{'chess960'} = $pos->{'chess960'};
 	}
 	uciprint($engine, "position fen " . $pos->fen());
 	uciprint($engine, "go infinite");
 	$pos_calculating = $pos;
+	$pos_calculating_started = [Time::HiRes::gettimeofday];
+	$pos_pv_started = undef;
 
 	if (defined($engine2)) {
 		if (defined($pos_calculating_second_engine)) {
 			$engine2->{'stopping'} = 1;
 			uciprint($engine2, "stop");
 		}
-		if ($engine2->{'chess960'} != $pos->is_chess960()) {
-			uciprint($engine2, "setoption UCI_Chess960 " . ($pos->is_chess960() ? 'true' : 'false'));
-			$engine2->{'chess960'} = $pos->is_chess960();
+		if ($engine2->{'chess960'} != $pos->{'chess960'}) {
+			uciprint($engine2, "setoption name UCI_Chess960 value " . ($pos->{'chess960'} ? 'true' : 'false'));
+			$engine2->{'chess960'} = $pos->{'chess960'};
 		}
 		uciprint($engine2, "position fen " . $pos->fen());
 		uciprint($engine2, "go infinite");
@@ -416,8 +454,6 @@ sub handle_position {
 	$engine->{'info'} = {};
 	$last_move = time;
 
-	schedule_tb_lookup();
-
 	# 
 	# Output a command every move to note that we're
 	# still paying attention -- this is a good tradeoff,
@@ -470,6 +506,7 @@ sub parse_infos {
 
 			delete $info->{'score_cp' . $mpv};
 			delete $info->{'score_mate' . $mpv};
+			delete $info->{'splicepos' . $mpv};
 
 			while ($x[0] eq 'cp' || $x[0] eq 'mate') {
 				if ($x[0] eq 'cp') {
@@ -521,10 +558,14 @@ sub prettyprint_pv_no_cache {
 		return ();
 	}
 
-	my $pv = shift @pvs;
-	my ($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) );
+	my @ret = ();
+	for my $pv (@pvs) {
+		my ($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);
+		push @ret, $pretty;
+		$board = $nb;
+	}
+	return @ret;
 }
 
 sub prettyprint_pv {
@@ -561,8 +602,11 @@ sub complete_using_tbprobe {
 	my @pv = @{$info->{'pv' . $mpv}};
 	my $key = $pos->fen() . " " . join('', @pv);
 	my @moves = ();
+	my $splicepos;
 	if (exists($tbprobe_cache{$key})) {
-		@moves = @{$tbprobe_cache{$key}};
+		my $c = $tbprobe_cache{$key};
+		@moves = @{$c->{'moves'}};
+		$splicepos = $c->{'splicepos'};
 	} else {
 		if ($mpv ne '') {
 			# Force doing at least one move of the PV.
@@ -571,30 +615,36 @@ sub complete_using_tbprobe {
 			$pos = $pos->make_move(parse_uci_move($move));
 		}
 
-		while ($pos->num_pieces() > 6 && $#pv > -1) {
+		while ($pos->num_pieces() > 7 && $#pv > -1) {
 			my $move = shift @pv;
 			push @moves, $move;
 			$pos = $pos->make_move(parse_uci_move($move));
 		}
 
-		return if ($pos->num_pieces() > 6);
+		return if ($pos->num_pieces() > 7);
 
 		my $fen = $pos->fen();
-		my $pgn_text = `fathom --path=/srv/syzygy "$fen"`;
+		my $pgn_text = `$remoteglotconf::fathom_cmdline "$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.
+		$splicepos = scalar @moves;
 		for my $move (@{$pgn->moves}) {
 			last if $move eq '#';
+			last if $move eq '1-0';
+			last if $move eq '0-1';
+			last if $move eq '1/2-1/2';
 			my $uci_move;
 			($pos, $uci_move) = $pos->make_pretty_move($move);
 			push @moves, $uci_move;
 		}
 
-		$tbprobe_cache{$key} = \@moves;
+		$tbprobe_cache{$key} = {
+			moves => \@moves,
+			splicepos => $splicepos
+		};
 	}
 
 	$info->{'pv' . $mpv} = \@moves;
@@ -605,6 +655,7 @@ sub complete_using_tbprobe {
 	} else {
 		$info->{'score_mate' . $mpv} = $matelen;
 	}
+	$info->{'splicepos' . $mpv} = $splicepos;
 }
 
 sub output {
@@ -612,55 +663,32 @@ sub output {
 
 	return if (!defined($pos_calculating));
 
-	# Don't update too often.
-	my $age = Time::HiRes::tv_interval($latest_update);
-	if ($age < $remoteglotconf::update_max_interval) {
-		my $wait = $remoteglotconf::update_max_interval + 0.01 - $age;
-		$output_timer = AnyEvent->timer(after => $wait, cb => \&output);
-		return;
-	}
-	
 	my $info = $engine->{'info'};
 
-	#
-	# If we have tablebase data from a previous lookup, replace the
-	# engine data with the data from the tablebase.
-	#
-	my $fen = $pos_calculating->fen();
-	if (exists($tb_cache{$fen})) {
-		for my $key (qw(pv score_cp score_mate nodes nps depth seldepth tbhits)) {
-			delete $info->{$key . '1'};
-			delete $info->{$key};
-		}
-		$info->{'nodes'} = 0;
-		$info->{'nps'} = 0;
-		$info->{'depth'} = 0;
-		$info->{'seldepth'} = 0;
-		$info->{'tbhits'} = 0;
-
-		my $t = $tb_cache{$fen};
-		my $pv = $t->{'pv'};
-		my $matelen = int((1 + $t->{'score'}) / 2);
-		if ($t->{'result'} eq '1/2-1/2') {
-			$info->{'score_cp'} = 0;
-		} elsif ($t->{'result'} eq '1-0') {
-			if ($pos_calculating->{'toplay'} eq 'B') {
-				$info->{'score_mate'} = -$matelen;
-			} else {
-				$info->{'score_mate'} = $matelen;
-			}
-		} else {
-			if ($pos_calculating->{'toplay'} eq 'B') {
-				$info->{'score_mate'} = $matelen;
-			} else {
-				$info->{'score_mate'} = -$matelen;
-			}
+	# Don't update too often.
+	my $wait = $remoteglotconf::update_max_interval - Time::HiRes::tv_interval($latest_update);
+	if (defined($pos_calculating_started)) {
+		my $new_pos_wait = $remoteglotconf::update_force_after_move - Time::HiRes::tv_interval($pos_calculating_started);
+		$wait = $new_pos_wait if ($new_pos_wait < $wait);
+	}
+	if (!$last_output_had_pv && has_pv($info)) {
+		if (!defined($pos_pv_started)) {
+			$pos_pv_started = [Time::HiRes::gettimeofday];
 		}
-		$info->{'pv'} = $pv;
-		$info->{'tablebase'} = 1;
-	} else {
-		$info->{'tablebase'} = 0;
+		# We just got initial PV, and we're in a hurry since we gave out a blank one earlier,
+		# so give us just 200ms more to increase the quality and then force a display.
+		my $new_pos_wait = $remoteglotconf::update_force_after_move - Time::HiRes::tv_interval($pos_pv_started);
+		$wait = $new_pos_wait if ($new_pos_wait < $wait);
 	}
+	if ($wait > 0.0) {
+		$output_timer = AnyEvent->timer(after => $wait + 0.01, cb => \&output);
+		return;
+	}
+	$pos_pv_started = undef;
+	
+	# We're outputting something for this position now, so the special handling
+	# for new positions is off.
+	undef $pos_calculating_started;
 	
 	#
 	# Some programs _always_ report MultiPV, even with only one PV.
@@ -668,7 +696,7 @@ sub output {
 	# specified.
 	#
 	if (exists($info->{'pv1'}) && !exists($info->{'pv2'})) {
-		for my $key (qw(pv score_cp score_mate nodes nps depth seldepth tbhits)) {
+		for my $key (qw(pv score_cp score_mate nodes nps depth seldepth tbhits splicepos)) {
 			if (exists($info->{$key . '1'})) {
 				$info->{$key} = $info->{$key . '1'};
 			} else {
@@ -713,6 +741,14 @@ sub output {
 	output_screen();
 	output_json(0);
 	$latest_update = [Time::HiRes::gettimeofday];
+	$last_output_had_pv = has_pv($info);
+}
+
+sub has_pv {
+	my $info = shift;
+	return 1 if (exists($info->{'pv'}) && (scalar(@{$info->{'pv'}}) > 0));
+	return 1 if (exists($info->{'pv1'}) && (scalar(@{$info->{'pv1'}}) > 0));
+	return 0;
 }
 
 sub output_screen {
@@ -738,6 +774,11 @@ sub output_screen {
 	}
 
 	return unless (exists($pos_calculating->{'board'}));
+
+	my $extra_moves = $pos_calculating->{'extra_moves'};
+	if (defined($extra_moves) && scalar @$extra_moves > 0) {
+		$text .= "  Manual move extensions: " . join(' ', @$extra_moves) . "\n";
+	}
 		
 	if (exists($info->{'pv1'}) && exists($info->{'pv2'})) {
 		# multi-PV
@@ -790,8 +831,6 @@ sub output_screen {
 		$text .= "\n\n";
 	}
 
-	#$text .= book_info($pos_calculating->fen(), $pos_calculating->{'board'}, $pos_calculating->{'toplay'});
-
 	my @refutation_lines = ();
 	if (defined($engine2)) {
 		for (my $mpv = 1; $mpv < 500; ++$mpv) {
@@ -860,7 +899,6 @@ sub output_json {
 		$json->{'move_source_url'} = $remoteglotconf::move_source_url;
 	}
 	$json->{'score'} = score_digest($info, $pos_calculating, '');
-	$json->{'using_lomonosov'} = defined($remoteglotconf::tb_serial_key);
 
 	$json->{'nodes'} = $info->{'nodes'};
 	$json->{'nps'} = $info->{'nps'};
@@ -890,6 +928,9 @@ sub output_json {
 					move => $pretty_move,
 					pv => \@pretty_pv,
 				};
+				if (exists($info->{'splicepos' . $mpv})) {
+					$refutation_lines{$pretty_move}->{'splicepos'} = $info->{'splicepos' . $mpv};
+				}
 			};
 		}
 	}
@@ -907,6 +948,7 @@ sub output_json {
 		} else {
 			$pos = Position->start_pos('white', 'black');
 		}
+		$pos->{'chess960'} = $pos_calculating->{'chess960'};
 		my $halfmove_num = 0;
 		for my $move (@{$pos_calculating->{'history'}}) {
 			my $id = id_for_pos($pos, $halfmove_num);
@@ -994,7 +1036,7 @@ sub output_json {
 	}
 
 	if (exists($pos_calculating->{'history'}) &&
-	    defined($remoteglotconf::json_history_dir)) {
+	    defined($remoteglotconf::json_history_dir) && defined($json->{'engine'}{name})) {
 		my $id = id_for_pos($pos_calculating);
 		my $filename = $remoteglotconf::json_history_dir . "/" . $id . ".json";
 
@@ -1100,7 +1142,24 @@ sub score_digest {
 		if ($pos->{'toplay'} eq 'B') {
 			$mate = -$mate;
 		}
-		return ['m', $mate];
+		if (exists($info->{'splicepos' . $mpv})) {
+			my $sp = $info->{'splicepos' . $mpv};
+			if ($mate > 0) {
+				return ['T', $sp];
+			} else {
+				return ['t', $sp];
+			}
+		} else {
+			if ($mate > 0) {
+				return ['M', $mate];
+			} elsif ($mate < 0) {
+				return ['m', -$mate];
+			} elsif ($pos->{'toplay'} eq 'B') {
+				return ['M', 0];
+			} else {
+				return ['m', 0];
+			}
+		}
 	} else {
 		if (exists($info->{'score_cp' . $mpv})) {
 			my $score = $info->{'score_cp' . $mpv};
@@ -1126,10 +1185,19 @@ sub long_score {
 		if ($pos->{'toplay'} eq 'B') {
 			$mate = -$mate;
 		}
-		if ($mate > 0) {
-			return sprintf "White mates in %u", $mate;
+		if (exists($info->{'splicepos' . $mpv})) {
+			my $sp = $info->{'splicepos' . $mpv};
+			if ($mate > 0) {
+				return sprintf "White wins in %u", int(($sp + 1) * 0.5);
+			} else {
+				return sprintf "Black wins in %u", int(($sp + 1) * 0.5);
+			}
 		} else {
-			return sprintf "Black mates in %u", -$mate;
+			if ($mate > 0) {
+				return sprintf "White mates in %u", $mate;
+			} else {
+				return sprintf "Black mates in %u", -$mate;
+			}
 		}
 	} else {
 		if (exists($info->{'score_cp' . $mpv})) {
@@ -1181,56 +1249,32 @@ sub plot_score {
 	return undef;
 }
 
-my %book_cache = ();
-sub book_info {
-	my ($fen, $board, $toplay) = @_;
-
-	if (exists($book_cache{$fen})) {
-		return $book_cache{$fen};
-	}
-
-	my $ret = `./booklook $fen`;
-	return "" if ($ret =~ /Not found/ || $ret eq '');
-
-	my @moves = ();
-
-	for my $m (split /\n/, $ret) {
-		my ($move, $annotation, $win, $draw, $lose, $rating, $rating_div) = split /,/, $m;
+sub extend_from_manual_override {
+	my ($pos, $moves, $extra_moves) = @_;
 
-		my $pmove;
-		if ($move eq '')  {
-			$pmove = '(current)';
-		} else {
-			($pmove) = prettyprint_pv_no_cache($board, $move);
-			$pmove .= $annotation;
+	my $q = $dbh->prepare('SELECT next_move FROM game_extensions WHERE fen=? AND history=? AND player_w=? AND player_b=? AND (CURRENT_TIMESTAMP - ts) < INTERVAL \'1 hour\'');
+	while (1) {
+		my $player_w = $pos->{'player_w'};
+		my $player_b = $pos->{'player_b'};
+		if ($player_w =~ /^base64:(.*)$/) {
+			$player_w = MIME::Base64::decode_base64($1);
 		}
-
-		my $score;
-		if ($toplay eq 'W') {
-			$score = 1.0 * $win + 0.5 * $draw + 0.0 * $lose;
-		} else {
-			$score = 0.0 * $win + 0.5 * $draw + 1.0 * $lose;
+		if ($player_b =~ /^base64:(.*)$/) {
+			$player_b = MIME::Base64::decode_base64($1);
 		}
-		my $n = $win + $draw + $lose;
-		
-		my $percent;
-		if ($n == 0) {
-			$percent = "     ";
+		#use Data::Dumper; print Dumper([$pos->fen(), JSON::XS::encode_json($moves), $player_w, $player_b]);
+		$q->execute($pos->fen(), JSON::XS::encode_json($moves), $player_w, $player_b);
+		my $ref = $q->fetchrow_hashref;
+		if (defined($ref)) {
+			my $move = $ref->{'next_move'};
+			($pos) = $pos->make_pretty_move($move);
+			push @$moves, $move;
+			push @$extra_moves, $move;
 		} else {
-			$percent = sprintf "%4u%%", int(100.0 * $score / $n + 0.5);
+			last;
 		}
-
-		push @moves, [ $pmove, $n, $percent, $rating ];
-	}
-
-	@moves[1..$#moves] = sort { $b->[2] cmp $a->[2] } @moves[1..$#moves];
-	
-	my $text = "Book moves:\n\n              Perf.     N     Rating\n\n";
-	for my $m (@moves) {
-		$text .= sprintf "  %-10s %s   %6u    %4s\n", $m->[0], $m->[2], $m->[1], $m->[3]
 	}
-
-	return $text;
+	return $pos;
 }
 
 sub extract_clock {
@@ -1351,84 +1395,6 @@ sub find_clock_start {
 	$dbh->commit;
 }
 
-sub schedule_tb_lookup {
-	return if (!defined($remoteglotconf::tb_serial_key));
-	my $pos = $pos_calculating;
-	return if (exists($tb_cache{$pos->fen()}));
-
-	# If there's more than seven pieces, there's not going to be an answer,
-	# so don't bother.
-	return if ($pos->num_pieces() > 7);
-
-	# Max one at a time. If it's still relevant when it returns,
-	# schedule_tb_lookup() will be called again.
-	return if ($tb_lookup_running);
-
-	$tb_lookup_running = 1;
-	my $url = 'http://tb7-api.chessok.com:6904/tasks/addtask?auth.login=' .
-		$remoteglotconf::tb_serial_key .
-		'&auth.password=aquarium&type=0&fen=' . 
-		URI::Escape::uri_escape($pos->fen());
-	print TBLOG "Downloading $url...\n";
-	AnyEvent::HTTP::http_get($url, sub {
-		handle_tb_lookup_return(@_, $pos, $pos->fen());
-	});
-}
-
-sub handle_tb_lookup_return {
-	my ($body, $header, $pos, $fen) = @_;
-	print TBLOG "Response for [$fen]:\n";
-	print TBLOG $header . "\n\n";
-	print TBLOG $body . "\n\n";
-	eval {
-		my $response = JSON::XS::decode_json($body);
-		if ($response->{'ErrorCode'} != 0) {
-			die "Unknown tablebase server error: " . $response->{'ErrorDesc'};
-		}
-		my $state = $response->{'Response'}{'StateString'};
-		if ($state eq 'COMPLETE') {
-			my $pgn = Chess::PGN::Parse->new(undef, $response->{'Response'}{'Moves'});
-			if (!defined($pgn) || !$pgn->read_game()) {
-				warn "Error in parsing PGN\n";
-			} else {
-				$pgn->quick_parse_game;
-				my $pvpos = $pos;
-				my $moves = $pgn->moves;
-				my @uci_moves = ();
-				for my $move (@$moves) {
-					my $uci_move;
-					($pvpos, $uci_move) = $pvpos->make_pretty_move($move);
-					push @uci_moves, $uci_move;
-				}
-				$tb_cache{$fen} = {
-					result => $pgn->result,
-					pv => \@uci_moves,
-					score => $response->{'Response'}{'Score'},
-				};
-				output();
-			}
-		} elsif ($state =~ /QUEUED/ || $state =~ /PROCESSING/) {
-			# Try again in a second. Note that if we have changed
-			# position in the meantime, we might query a completely
-			# different position! But that's fine.
-		} else {
-			die "Unknown response state " . $state;
-		}
-
-		# Wait a second before we schedule another one.
-		$tb_retry_timer = AnyEvent->timer(after => 1.0, cb => sub {
-			$tb_lookup_running = 0;
-			schedule_tb_lookup();
-		});
-	};
-	if ($@) {
-		warn "Error in tablebase lookup: $@";
-
-		# Don't try this one again, but don't block new lookups either.
-		$tb_lookup_running = 0;
-	}
-}
-
 sub open_engine {
 	my ($cmdline, $tag, $cb) = @_;
 	return undef if (!defined($cmdline));
@@ -1452,3 +1418,16 @@ sub parse_uci_move {
 	my $promo    = substr($move, 4, 1);
 	return ($from_row, $from_col, $to_row, $to_col, $promo);
 }
+
+sub setoptions {
+	my ($engine, $config) = @_;
+	uciprint($engine, "setoption name UCI_AnalyseMode value true");
+	uciprint($engine, "setoption name Analysis Contempt value Off");
+	if (exists($config->{'Threads'})) {  # Threads first, because clearing hash can be multithreaded then.
+		uciprint($engine, "setoption name Threads value " . $config->{'Threads'});
+	}
+	while (my ($key, $value) = each %$config) {
+		next if $key eq 'Threads';
+		uciprint($engine, "setoption name $key value $value");
+	}
+}