Red moves and mates in 2
Mate in 2, proven against every defence.
Red is to move and forces mate in 2. Black is not helpless: there are nothing but the General still on the board, and every legal defence has been tried against this solution. All of them lose.
The position
Red attacks with a horse and a cannon, and Black's General stands on f8. Black's defenders: nothing but the General.
- Mate in 2
- Horse finish
- Rating 1574
Red moves first. Find the move that forces mate whatever Black replies, then open the solution below.
Show the solution
傌 a10–b8 is the only move that wins. Look at what it does: and leaves Black 1 legal reply, none of which help.
The line
- Red傌 a10–b8Quiet, and there is no answer to the threat.
- Black將 f8–f9Black's most stubborn defence.
- Red傌 b8–d9Checkmate.
Every one of Black's 1 answers was played out to the end. The line below follows the most stubborn of them, the one that lasts longest and costs Red the most.
Why it is mate
A horse delivering mate beside the palace is the shape players call the trough horse, 卧槽马: it checks and covers escape points at the same time, and because a horse cannot be blocked by a piece in its path once it has landed, only capture or flight would help.
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 2 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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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.