X-Git-Url: https://git.sesse.net/?p=remoteglot;a=blobdiff_plain;f=Board.pm;h=39c8134096b5897a0e7bd0ff47baad0441fe310f;hp=a867c74162cefde898c6f25d3fd37442c02bc2c5;hb=41591b89435e7b052b4f953dc78d074662803677;hpb=735425d12830b76de9fd60247267380424902d3b

diff --git a/Board.pm b/Board.pm
index a867c74..39c8134 100644
--- a/Board.pm
+++ b/Board.pm
@@ -170,7 +170,7 @@ sub parse_pretty_move {
 
 	# Parse promo
 	my $promo;
-	if ($move =~ s/=([QRNB])$//) {
+	if ($move =~ s/=?([QRNB])$//) {
 		$promo = $1;
 	}
 
@@ -200,8 +200,11 @@ sub parse_pretty_move {
 			push @squares, [ $row, $col ];
 		}
 	}
+	if (scalar @squares == 0) {
+		die "Impossible move $move";
+	}
 	if (scalar @squares != 1) {
-		die "Ambigious or impossible move $move";
+		die "Ambigious move $move";
 	}
 	return (@{$squares[0]}, $to_row, $to_col, $promo);
 }
@@ -425,6 +428,19 @@ sub prettyprint_move {
 	return ($pretty, $nb);
 }
 
+sub num_pieces {
+	my ($board) = @_;
+
+	my $num = 0;
+	for my $row (0..7) {
+		for my $col (0..7) {
+			my $piece = $board->[$row][$col];
+			++$num if ($piece ne '-');
+		}
+	}
+	return $num;	
+}
+
 sub _prettyprint_move_no_check_or_mate {
         my ($board, $from_row, $from_col, $to_row, $to_col, $promo) = @_;
 	my $piece = $board->[$from_row][$from_col];