17 my ($filename, $my_num, $tot_num) = @ARGV;
19 my $pgn = Chess::PGN::Parse->new($filename)
20 or die "can't open $filename\n";
22 while ($pgn->read_game()) {
23 next unless ($game_num++ % $tot_num == $my_num);
24 my $tags = $pgn->tags();
25 # next unless $tags->{'WhiteElo'} >= 2000;
26 # next unless $tags->{'BlackElo'} >= 2000;
27 $pgn->quick_parse_game;
28 my $pos = Position->start_pos($pgn->white, $pgn->black);
29 my $result = $pgn->result;
31 if ($result eq '1-0') {
33 } elsif ($result eq '1/2-1/2') {
35 } elsif ($result eq '0-1') {
38 die "Unknown result $result";
40 my $binwhiteelo = pack('l', $tags->{'WhiteElo'});
41 my $binblackelo = pack('l', $tags->{'BlackElo'});
42 my $moves = $pgn->moves;
43 my $opening = ECO::get_opening_num($pos);
44 # print STDERR $pgn->white, " ", $pgn->black, "\n";
45 for (my $i = 0; $i + 1 < scalar @$moves; ++$i) {
46 my ($from_row, $from_col, $to_row, $to_col, $promo) = $pos->parse_pretty_move($moves->[$i]);
47 my $next_move = $moves->[$i];
48 my $bpfen = $pos->bitpacked_fen;
50 $opening = ECO::get_opening_num($pos) // $opening;
51 print "$fen $next_move $result $opening\n" if $TEXTOUT;
53 print chr(length($bpfen) + length($next_move)) . $bpfen . $next_move;
54 print $binresult . $binwhiteelo . $binblackelo;
55 print pack('l', $opening);
57 $pos = $pos->make_move($from_row, $from_col, $to_row, $to_col, $promo, $moves->[$i]);