Red to play, mate in 1
Mate in 1, proven against every defence.
Red to move. There is exactly one winning first move here, and it mates in 1 against anything Black tries. Black's remaining force: a soldier and a cannon.
The position
Red attacks with 2 cannons, and Black's General stands on f10. Black's defenders: a soldier and a cannon.
- Mate in 1
- Cannon finish
- Rating 1280
Red moves first. Find the move that forces mate whatever Black replies, then open the solution below.
Show the solution
It starts with 炮 h7–f7.
The line
- Red炮 h7–f7Checkmate.
Mate is immediate: no flight square, no capture and no block.
Why it is mate
The cannon fires through a soldier and lands on the General. Take the screen away and the threat disappears, which is the first thing to look for whenever a cannon is aimed at your palace.
Read about this patternHow this puzzle was checked
Nothing here is an engine opinion. The position was solved by trying every legal defence to the full mate distance, so the claim that Red mates in 1 is a proof rather than an evaluation, and the first move shown is the only one that works. The defence in the line above is Black’s most stubborn try, not a convenient one.
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