Position and objective
Red material: Horse + 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 f9. Trace Red's c5-f5 move on the diagram before checking Black's reply.
How the mate works
Verified line: Red c5-f5 (炮七平四), Black f7-e8 (士6退5), then Red d6-f7 (馬六进四) 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 c5-f5 (炮七平四), Black answers f7-e8 (士6退5), and Red finishes with d6-f7 (馬六进四). Update the board after Black's reply before testing the final move.
Check the horse leg before accepting the L-shaped move.
Full move list
Moves alternate Red and Black, exactly as published in the solution.
- 1. c5-f5 f7-e8 （炮七平四 士6退5）
- 2. d6-f7 （馬六进四）
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.