Position and objective
Red material: Horse + Cannon. Black defenders: Advisor + Cannon.
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 c4-e5 move on the diagram before checking Black's reply.
How the mate works
Verified line: Red c4-e5 (馬七进五), Black d7-d8 (將4退1), after the intervening moves Red h8-h7 (炮二退一) mates. This is one legal continuation of the validated solution.
The shortest mate takes four 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. c4-e5 d7-d8 （馬七进五 將4退1）
- 2. h4-h8 e8-f9 （炮二进四 士5退6）
- 3. e5-f7 d8-d7 （馬五进四 將4进1）
- 4. h8-h7 （炮二退一）
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.