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 2 advisors, a elephant and a cannon still on the board, and every legal defence has been tried against this solution. All of them lose.
The position
Red attacks with 3 cannons and 2 chariots, and Black's General stands on d8. Black's defenders: 2 advisors, a elephant and a cannon.
- Mate in 2
- Cannon finish
- Rating 1739
Red moves first. Find the move that forces mate whatever Black replies, then open the solution below.
Show the solution
俥 b5–b8 is the only move that wins. Look at what it does: it removes 1 escape point from the General, and leaves Black 1 legal reply, none of which help.
The line
- Red俥 b5–b8Check. Black must answer.
- Black將 d8–d9Black's most stubborn defence.
- Red炮 g5–d5Checkmate.
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
Two cannons on one line, the front one screening the one behind it. That is 重炮, stacked cannons, and it cannot be blocked: any piece that steps in simply becomes another screen.
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.
Next puzzles
- Red to play, mate in 1x0705 · rating 1199
- Red to play, mate in 1x0703 · rating 1278
- Red moves and mates in 1x0706 · rating 1252
- Red to play, mate in 2x0702 · rating 1774
- Red moves and mates in 2x0707 · rating 1591
- Red to play, mate in 1x0701 · rating 1123
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.