| 摘要 |
PROBLEM TO BE SOLVED: To make a game player play a pachinko game advantageously without loss by controlling the putting out of renting out balls always at a minimal necessity. SOLUTION: An estimated number for remaining balls which should be on a ball tray is computed by the accumulation of put-out ball numbers which are put out to the ball tray 3, and the accumulation of an operating period of time for a handle 7 for the launching of hitting balls. When the estimated number for remaining balls has exceeded a specified number, the putting out of renting out balls is reserved. In addition, when the number for remaining balls becomes sufficient, a putting-out demand for renting out balls is cancelled.
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