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 f9. Trace Red's e5-e9 move on the diagram before checking Black's reply.
How the mate works
Verified line: Red e5-e9 (車五进四), Black f9-f8 (將6进1), then Red g3-g8 (車三进五) 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 central chariot advances from e5 to e9. The general advances from f9 to f8 in the recorded reply, and the side chariot advances from g3 to g8 for mate. Each chariot operates on its own file.
The opening move uses the e-file, while the finish uses the g-file. Keep the two chariots’ origins separate when replaying the line.
Full move list
Moves alternate Red and Black, exactly as published in the solution.
- 1. e5-e9 f9-f8 （車五进四 將6进1）
- 2. g3-g8 （車三进五）
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.