| 摘要 |
PROBLEM TO BE SOLVED: To provide a sumo match device using water. SOLUTION: The sumo game device comprises a hollow figure 3 made of a flexible material and erected on a mount 1, a water supply means 17 for filling the hollow figure 3 with water, a means 6 for pressing the mount 1 in a horizontal advancing direction with given pressure, and a means 7 for detecting a retreat of a given distance of the mount 1 in a horizontal retreating direction.
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