Anti-Stack 4This is just like regular Stack4, but the object is to make your opponent be the first to connect four or more pieces in a row. There is one other rule: you can not place a piece on top of the piece your opponent just placed on the board in the previous move. If the board fills up with pieces and nobody has put four in a row, then "x" wins. This is because "x" has a disadvantage as the first to move.
SoftwareYou can play Anti-Stack 4