Room and Pillar

Room and Pillar is an abstract strategy game by Mark Steere, played on a Konane board: a grid filled with a checkerboard pattern of black and white stones. Black and White take turns removing one of their own stones. After the first removal, every removal must be next to an empty point, and a removal must never create a 2x2 area of empty points. The last player able to remove a stone wins. The rules take a minute to learn. The game has no draws, no luck and no turn-order advantage worth mentioning, and it uses the pie rule. FEATURES - Play against the computer at six levels, from random to unbeatable. The top level plays perfectly on the smaller boards. - Play against a friend on one iPhone or iPad. - Five board sizes: 4x5, 5x6, 6x7, 7x8 and 8x9. - Pie rule on or off. Choose who moves first. - Legal removals can be marked. Confirm removals on or off. Undo and a hint are one tap away. -…