the heap, and when removing three objects from a heap of five or more, the player may also split the remainder into two heaps. The initial position is a single heap of size . The nim-sequence for this game is 0.1120311033224052233011302110452740 1120311033224455233011302110453748 1120311033224455933011302110453748 1120311033224455933011302110453748 1120311033224455933011302110453748 ..., where bold entries indicate the values that differ from the eventual periodic behavior of the sequence. References Mathematical Games, Scientific American, March 1962, reprinted in The Unexpected Hanging and Other Mathematical Diversions, by Martin Gardner, pp. 93ff External links Hexapawn - an article by Robert Price. Hexapawn java applet - source code included. Hexapawn game for IOS Play Hexapawn - Play Online Mathematical games Chess variants 1962 in chess Board games introduced in 1962 Solved games