10 face-down poker cards are placed in a row on the table, and two children play a flop game. Rules: Each player can only turn over one or two adjacent cards each time to make them face up. The turned over cards cannot be turned over again. Two people turn over in turns. The person who turns over the last card wins. Q: How can I be sure to win?
10张正面朝下的扑克牌排成一排放在桌子上，两个小朋友做翻牌游戏．规定：每人每次只能翻动一张或两张相邻的牌使之正面朝上，翻过的牌不能再翻，两人轮流翻动，翻动最后一张牌的人获胜．问：怎样做才必定获胜？
<result>3</result>