16 my ($filename, $my_num, $tot_num) = @ARGV;
18 my $pgn = Chess::PGN::Parse->new($filename)
19 or die "can't open $filename\n";
21 while ($pgn->read_game()) {
22 next unless ($game_num++ % $tot_num == $my_num);
23 my $tags = $pgn->tags();
24 # next unless $tags->{'WhiteElo'} >= 2000;
25 # next unless $tags->{'BlackElo'} >= 2000;
26 $pgn->quick_parse_game;
27 my $pos = Position->start_pos($pgn->white, $pgn->black);
28 my $result = $pgn->result;
30 if ($result eq '1-0') {
32 } elsif ($result eq '1/2-1/2') {
34 } elsif ($result eq '0-1') {
37 die "Unknown result $result";
39 my $binwhiteelo = pack('l', $tags->{'WhiteElo'});
40 my $binblackelo = pack('l', $tags->{'BlackElo'});
41 my $moves = $pgn->moves;
42 my $opening = ECO::get_opening_num($pos);
43 # print STDERR $pgn->white, " ", $pgn->black, "\n";
44 for (my $i = 0; $i + 1 < scalar @$moves; ++$i) {
45 my ($from_row, $from_col, $to_row, $to_col, $promo) = $pos->parse_pretty_move($moves->[$i]);
46 my $next_move = $moves->[$i];
47 my $bpfen = $pos->bitpacked_fen;
49 $opening = ECO::get_opening_num($pos) // $opening;
50 print "$fen $next_move $result $opening\n" if $TEXTOUT;
52 print chr(length($bpfen) + length($next_move)) . $bpfen . $next_move;
53 print $binresult . $binwhiteelo . $binblackelo;
54 print pack('l', $opening);
56 $pos = $pos->make_move($from_row, $from_col, $to_row, $to_col, $promo, $moves->[$i]);