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: nothing but the General.
The position
Red attacks with a horse and a cannon, and Black's General stands on d10. Black's defenders: nothing but the General.
- Mate in 1
- General finish
- Rating 1284
Red moves first. Find the move that forces mate whatever Black replies, then open the solution below.
Show the solution
It starts with 帥 f1–e1. Look at what it does: it removes 1 escape point from the General.
The line
- Red帥 f1–e1Checkmate.
There is nothing to try. The General cannot move, the checking piece cannot be taken, and nothing can be interposed.
Why it is mate
The Generals decide it. With the file between them clear, the enemy General cannot stay where it is and cannot legally move to where it would still face its opposite number. That is the flying general rule doing the work.
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.
Next puzzles
- Red moves and mates in 1x1836 · rating 1101
- Red moves and mates in 2x1834 · rating 1807
- Red to play, mate in 2x1837 · rating 1617
- Red moves and mates in 1x1833 · rating 1133
- Red moves and mates in 1x1838 · rating 1326
- Red moves and mates in 2x1832 · rating 1686
New to mating patterns? The glossary names the ones that come up again and again, the piece guides explain what each piece can do, and the rules page covers everything from the start.