| 摘要 |
PROBLEM TO BE SOLVED: To surely evade an entry of a game ball from the point of time at which a tongue-like movable piece starts moving from an entry possible position to an entry rejection position.SOLUTION: When a tongue-like movable piece 300 is positioned at a first position, a vertex 300A is at a position separated from a game board 19 further compared with a case where the center of a game ball PB is at the most separated position from the game board 19. Thus, when the tongue-like movable piece 300 is at the first position, almost all falling game balls PB are received by a winning opening end 302. Immediately after the tongue-like movable piece 300 starts moving from the first position to a second position, the vertex 300A comes closer to the game board 19 compared with the case where the center of the game ball PB is at the most separated position from the game board 19. Thus, immediately after the tongue-like movable piece 300 starts moving from the first position, almost all falling game balls PB are not received by the winning opening end 302. |
