基本图形：马在e2后在g1或马在e7后在g8杀
如图形势，轮白方走，他认输了，因为1.…Qg1绝杀无解。
实战应用一：黑先
实战应用二：黑先
实战应用三：白先
按：例题来自Murray Chandler：《chess puzzles for kids》
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