Two players, "Dip" and "Ole", alternate in putting dipoles on a rectangular board. A DIPOLE is a piece of size 2x1 or 1x2, where one pole is red and the other pole is blue. Dip places vertical dipoles only, and Ole horizontal ones. The player with the last move wins the game. Poles of the same color repel each other. So they are not allowed to lie side to side. Furthermore, the board has an underlying "outer field", indicated by lightly red and lightly blue squares. Red poles may only be dropped on lightly red squares, and blue poles only on lightly blue squares. In the beginning of a game the outer field is generated randomly by pressing the start button or clicking any square. Dip drops a vertical dipole by clicking the lower part of the destination. Ole drops a horizontal dipole by clicking the left part of the destination. For human players it helps a lot to activate the feature that shows all legal moves, especially in play against Zillions. Dipole contains some elements of the more traditional games CrossCram (=Domineering) and British Square. In Zillions, Dipole comes in three variants for board sizes 8x8, 10x10, and 13x13. Like in most games of "drop-and-stalemate" style Zillions-2 is much stronger than Zillions-1. In the author's sparring games with Zillions-2 it turned out that board size 10x10 gave him the best winning chances against the machine. On 8x8 board player Dip, who moves first, seems to have a slight advantage, averaged over many test positions. Three more variants are included. In them instead of the "stalemate-loss" condition the number of dipoles for each player is counted. At the end of a game the side with more pieces on the board is winner. Draws are possible and happen quite often. When you play long sequences of "counting games" feel free also to record the margins of wins and losses. Just for fun, in the 8x8 counting-version the outer field is almost regular. The screenshot is from the 10x10 variant with counting. It is Dip's turn to drop a vertical dipole, and the lower halfs of all admissible moves are highlighted. |