| 摘要 |
PROBLEM TO BE SOLVED: To make it easy to find a game machine suspected to suffer an unfair act regardless of game machine setting positions or game progress conditions, or to suppress an unfair act. SOLUTION: In the game machine equipped with a game board with a game area to which game balls are hit out, curvature variation of at least any of the board surface of the game board and support members supporting the game board is detected by a detection part 501, whether at least any of curvature of the board surface of the game board and the support members supporting the game board varied over a prescribed threshold value or not is determined by a determination part 502 based on the detection result, and the determination result is outputted by an output part 5. The determination part 502 determines whether an act of hitting the game machine existed or not by determining whether the curvature varied over the prescribed threshold value or not within a prescribed time. COPYRIGHT: (C)2009,JPO&INPIT
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