| 摘要 |
PROBLEM TO BE SOLVED: To prevent the game from becoming monotonous and to grow expectations toward release of reserved won prize when the reserved won prize is to be released. SOLUTION: When a prize BB is won, the prize BB is reserved. When a prize of replay is won, a possible prize winning is chosen between three lateral lines and five lines including three lateral lines and two diagonal lines. If the replay prize can be won with the five prize winning lines, the probability of winning a BB release prize is set higher than in cases where the replay prize can be won with three prize winning lines. COPYRIGHT: (C)2004,JPO&NCIPI
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