| 摘要 |
PROBLEM TO BE SOLVED: To play a ball game even in a narrow room or in the open air by using a novel tool, whereas in general, a conventional ball game can be played only in a wide room or in the open air. SOLUTION: Ten or more holes 2 are formed through a plate 1, and a score 3 is indicated at each hole. Legs 5 are attached to the plate 1 to incline the plate 1 downward toward its end where a frame is not provided. A frame is provided on three sides of the plate to prevent balls from bouncing out. If a ball rolling on the plate gets into a hole, the ball stays there as shown 6 in Fig. 3.
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