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Arimaa is a two-player 64-square board game invented by Omar Syed, a computer engineer trained in artificial intelligence. While its rules are simple, the game has proven to be deep in strategy, and programmers have yet to develop an Arimaa bot which can defeat the best human players.
High School Mathematics Extensions is aimed at, but not limited to, 14 to 18 year olds who are interested in mathematics in general. Several interesting topics not covered in the standard high school curriculum are introduced in this text.