Mate in 7 — Problem #2997241
🎯 Checkmate in 7 — your move
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9
8
7
6
5
4
3
2
1
一
二
三
四
五
六
七
八
九
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Show solution
▲５三飛成 △７一玉 ▲６一馬 △同 玉 ▲５二龍 △７一玉 ▲６一金
Why this move works
The answer is ▲５三飛成 △７一玉 ▲６一馬 △同玉 ▲５二龍 △７一玉 ▲６一金. Promote the rook into a dragon, sacrifice the horse, and finish with dragon and gold. ▲５三飛成 drives the king to 7一, ▲６一馬 is taken (△同玉) to pull the king to 6一, and after ▲５二龍 △７一玉, ▲６一金 mates, defended by the dragon on 5二.
Sacrificing the horse lures the king back to 6一, and the gold beside the king, supported by the dragon, delivers mate. The point is to settle the shape with a sacrifice while keeping the big piece’s control intact.