Position and objective
Red material: Chariot + 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 d9. Trace Red's c2-c9 move on the diagram before checking Black's reply.
How the mate works
Verified line: Red c2-c9 (車七进七), Black d9-d8 (將4进1), then Red f6-d6 (炮四平六) 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 chariot advances from c2 to c9, and the general advances from d9 to d8 in the recorded reply. The cannon then shifts from f6 to d6 and delivers the final file check. Its attack must be evaluated against the updated general position.
Count exactly one screen between the cannon and general. Sharing a file alone does not make a cannon check valid.
Full move list
Moves alternate Red and Black, exactly as published in the solution.
- 1. c2-c9 d9-d8 （車七进七 將4进1）
- 2. f6-d6 （炮四平六）
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.