Ключевые слова: abstract, background, board, brown, business, challenge, circle, compete, competition, concept, creative, cross, education, fun, game, hand, idea, leisure, line, logic, management, nought, o, ox, play, risk, shape, sign, solution, space, square, strategic, strategy, success, successful, symbol, tac, texture, thinking, tic, tictactoe, toe, top, toy, victory, win, wood, wooden, x, zero,