15. Dragons and serpents churn the sea

Secrets of the Golden Roc: 18 classical compositions

13 moves

Composition 15: 龍蛇混海, "Dragons and serpents churn the sea". Red to move; the printed verdict is 勝. The line is the book's printed solution, kernel-verified.

The block prints 馬八退一, an impossible retreat from this square. 馬八退七 is the only checking retreat, and it is mate. Checkmate on the board, exactly as the book's 勝 claims.