Position and objective
Red material: Chariot + Horse + Cannon. Black defenders: Advisor.
Mate the black general within the move limit. Red moves first and the AI answers for Black, with every move validated as it is played.
The black general starts on d7. Trace Red's h7-f8 move on the diagram before checking Black's reply.
How the mate works
Verified line: Red h7-f8 (馬二进四), Black f7-e8 (前士退5), after the intervening moves Red f8-g6 (馬四退三) mates. This is one legal continuation of the validated solution.
The shortest mate takes three moves. The complete move list is on this page — try to find it yourself first.
The first move is the key to the forced mate. Black may have other legal replies; the line below shows one verified continuation.
Key move and common mistakes
The horse checks from f8. In the recorded reply, the front black advisor retreats from f7 to e8, blocking the horse’s leg toward the general on d7. The chariot then shifts from i5 to d5 and drives the general to e7. Finally, the horse retreats from f8 to g6 and mates through a different attack route.
After the advisor reaches e8, the old horse attack toward d7 is blocked. Recalculate the final attack from g6 toward e7, whose leg square is f6, rather than carrying over the previous attack map.
Full move list
Moves alternate Red and Black, exactly as published in the solution.
- 1. h7-f8 f7-e8 （馬二进四 前士退5）
- 2. i5-d5 d7-e7 （車一平六 將4平5）
- 3. f8-g6 （馬四退三）
Difficulty and help
Use Hint when you are stuck, or Undo to take a move back.
A wrong move does not end the game — restart the same position and try again.