the new omok doesn't allow double 3's trap which is the most common trap, in the picture if I could place a piece on that space my cursor's on I'd win, but it won't let me place it, it's almost as if the match is only winnable if the other player doesn't pay attention to simple 4 in a rows. it wasn't like this back in the old source, if it's a intentional change it kinda ruins omok if not, please remove the 'double-3's' restriction.
This is how it was in the original version of the game and it was by design. The old source version of Omok was broken. This is a fix.