Rules: At the beginning of the game, players take turns placing a disk on one of the 64 squares of the board. Care must be taken to avoid the opponent surround whirl symbols with his own pieces. Then, after all 28 disks have been placed, the disks can be moved one square horizontally or vertically. No diagonal moves are allowed Once a player has placed four disks around a whirl symbol,he is in possession of that symbol and a marker of the appropriate colour is place on top of the symbol. The disks surrounding the whirl cannot be move any longer. Once a player has made ​​a whirl, he may move an opponent's disk to a different field of his choice. Once (or twice, if agreed by the players at the beginning), during the entire playing time, each player can jump over other pieces moving one disk as a chess knight does. The winner is the player that is able to conquer first three whirl symbols. (Additional rules allow to decide the winner in case one player has no legal moves for any of his pieces).