| 摘要 |
PROBLEM TO BE SOLVED: To reduce to the utmost a winning ratio of the fist winning combination and the second winning combination when a special performance is not performed.SOLUTION: When a special performance for reporting a pressing order in which a correct winning combination wins without fail is not performed, even in a game in which any of groups from a small winning combination group 1 to a small winning combination group 12 wins in an internal lottery, and even in the case where a pressing order of stop buttons B1-B3 is whichever between four kinds of pressing orders, the probability that a player allows the correct winning combination or some one kind of incorrect winning combination to win is suppressed at 1/4+3/4×1/3=1/2.SELECTED DRAWING: Figure 6 |
