Position and objective
Red material: Horse + Soldier. 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 f8. Trace Red's g9-h7 move on the diagram before checking Black's reply.
How the mate works
Verified line: Red g9-h7 (馬三退二), Black f8-f7 (將6进1), then Red f5-f6 (兵四进一) mates. This is one legal continuation of the validated solution.
The shortest mate takes two 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 retreats from g9 to h7, controlling palace escape points. After the general advances from f8 to f7 in the recorded reply, the soldier advances from f5 to f6 with mate. The horse’s control makes the simple soldier advance decisive.
Check the horse’s controlled squares as well as the soldier’s check. A checking soldier alone does not establish that every legal escape is closed.
Full move list
Moves alternate Red and Black, exactly as published in the solution.
- 1. g9-h7 f8-f7 （馬三退二 將6进1）
- 2. f5-f6 （兵四进一）
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.