Position and objective
Red material: Double Chariot. 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 h4-h9 move on the diagram before checking Black's reply.
How the mate works
Verified line: Red h4-h9 (車二进五), Black e8-f9 (士5退6), after the intervening moves Red b5-b8 (車八进三) 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.
Full move list
Moves alternate Red and Black, exactly as published in the solution.
- 1. h4-h9 e8-f9 （車二进五 士5退6）
- 2. h9-f9 d9-d8 （車二平四 將4进1）
- 3. b5-b8 （車八进三）
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.