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 i6-i9 move on the diagram before checking Black's reply.
How the mate works
Verified line: Red i6-i9 (車一进三), Black d9-d8 (將4进1), then Red c4-c8 (車七进四) 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 i6-i9 (車一进三), Black answers d9-d8 (將4进1), and Red finishes with c4-c8 (車七进四). Update the board after Black's reply before testing the final move.
A chariot follows an unobstructed rank or file.
Full move list
Moves alternate Red and Black, exactly as published in the solution.
- 1. i6-i9 d9-d8 （車一进三 將4进1）
- 2. c4-c8 （車七进四）
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.