这个游戏只涉及10以内的减法.但没有做过深入研究的人们很难取胜. 本游戏有三个被减数,玩家双方轮流(必须)选择其中一个,且一轮只能选一个来做减法,胜负规定:优先使三个被减数之和为1者胜出.-The game involves the subtraction of 10 or less. But not in depth study of it difficult to win. This game has three minuend, players take turns (must) c