--- Games-Go-SimpleBoard/SimpleBoard.pm	2008/06/25 20:49:38	1.10
+++ Games-Go-SimpleBoard/SimpleBoard.pm	2008/06/27 12:40:29	1.11
@@ -102,6 +102,10 @@
    my $class = shift;
    my $size = shift;
 
+   unless ($size > 0) {
+      Carp::croak ("no board size given!");
+   }
+
    bless {
       max       => $size - 1,
       size      => $size,