Yan Yan Raids the Camp 严颜劫寨

✓ Engine-verifiedBook result: Red winsMate in 7淵深海闊

📚 Yuanshen Haikua — a Qing-dynasty endgame manual

楚河漢界cotuong.synerworlds.com象士將砲士傌俥象砲馬兵炮卒炮車相車仕卒傌馬俥帥仕相cotuong.synerworlds.com

Red to move and checkmate in 7. This is a rare position where both armies are still nearly complete — two Rooks, two Knights, two Cannons, full Advisors and Elephants — and Black even has one extra Pawn. On a board crowded like a real battlefield, Red still finds a forced mate in just 7 moves. The position comes from the classical manual Uyên Thâm Hải Khoát (No. 134) and is named after the veteran general Nghiêm Nhan, who led a night raid on the enemy camp and rode straight into Trương Phi's trap — and what saved his life was not a weapon but a single sentence. The full story is in this page's Anecdotes section. In your view, which of Red's pieces breaks into Black's camp first on this 'night raid'?

✓ Engine-verified — The Fairy-Stockfish engine (NNUE) confirms Red checkmates in 7 moves — the main line was checked move by move, every move legal. Date checked: 2026-11-03.

📖 Anecdotes

일흔에 가까운 노장이 밤에 적진을 습격했다가 함정을 습격했다 — 그를 구한 것은 한 문장이었다

일흔에 가까운 장수가 밤에 적진을 습격하러 나섰다가, 함정을 습격하고 말았다. 그의 목숨을 구한 것은 칼도 창도 아니었다. 한 문장이었다. 『삼국연의』 제63회에서 노장 엄안은 강주를 벽처럼 지켰다. 성문을 굳게 닫고 해자를 깊이 파고, 장비의 군대가 군량이 떨어져 물러날 때까지 기다릴 작정이었다. 장비는 흠집 하나 내지 못하고 계책을 바꿨다. 사람을 보내 땔감을 베며 ‘길을 찾게’ 한 뒤, 일부러 소식을 흘렸다. 작은 길을 찾았으니 오늘 밤 장비 자신이 파군을 지나 앞장서겠다는 것이었다. 땔감꾼으로 변장한 엄안의 첩자들이 그…

— Đội ngũ SynerWorlds

Stories around this position — storytelling, not part of the engine-verified content.

Source
淵深海闊 第134局
Book result
Red wins
Verification
✓ Engine-verified
Side to move
Red to move
Difficulty
Hard
Red forces
King, Advisor ×2, Elephant ×2, Horse ×2, Chariot ×2, Cannon ×2, Pawn
Black forces
King, Advisor ×2, Elephant ×2, Horse ×2, Chariot ×2, Cannon ×2, Pawn ×2
FEN
2bak4/C3a2NR/4b4/1C7/4n4/8P/2c2pc2/2r1B1r2/4ApNn1/3RKAB2 w
Transcribed from
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Solution