data:image/png;base64,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110i121X's turn?5.6.3.55.6.3.7helper for 5.6.3.75.6.4.2This is a place where students are likely to use an unnecessary IF/ELSE block because the solution above seems "too easy" and therefore suspicious. Ideally they should both understand that their solution is correct if it works -- there isn't only one "right" way to write a program -- and that composition of functions enables fairly complicated algorithms to be one-liners when actually coded.5.6.4.3XSecond rule: block opponent's win.Fallback: move somewhere!data:image/png;base64,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10trueX,O,X,X,O,X,O,O,9false-100,50100,50-100,0100,0-100,-50100,-50-50,100-50,-1000,1000,-10050,10050,-100-100,100100,-100-100,-100100,100