Position and objective
Red material: Chariot + Soldier. Black defenders: Advisor + Elephant.
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 i8-i9 move on the diagram before checking Black's reply.
How the mate works
Verified line: Red i8-i9 (車一进一), Black d9-d8 (將4进1), after the intervening moves Red i9-d9 (車一平六) 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.
Key move and common mistakes
The chariot reaches i9 and checks the general from d9 to d8 in the recorded line. The soldier advances from c7 to c8, attacking d8 sideways and driving the general to d7. The chariot then shifts to d9 for the final file check, while the soldier controls the retreat to d8.
The initial c7-c8 move would not check a general on d9. First drive the general onto the soldier’s attack rank. At the finish, inspect both the chariot’s file and the soldier’s control of d8.
Full move list
Moves alternate Red and Black, exactly as published in the solution.
- 1. i8-i9 d9-d8 （車一进一 將4进1）
- 2. c7-c8 d8-d7 （兵七进一 將4进1）
- 3. i9-d9 （車一平六）
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.