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 d8. Trace Red's i9-i8 move on the diagram before checking Black's reply.
How the mate works
Verified line: Red i9-i8 (車一退一), Black d9-e8 (后士进5), then Red b5-d5 (炮八平六) 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 what to check
Red opens with i9-i8 (車一退一), Black answers d9-e8 (后士进5), and Red finishes with b5-d5 (炮八平六). Update the board after Black's reply before testing the final move.
A cannon attack needs exactly one intervening piece.
Full move list
Moves alternate Red and Black, exactly as published in the solution.
- 1. i9-i8 d9-e8 （車一退一 后士进5）
- 2. b5-d5 （炮八平六）
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.