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棋逢对手

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Red is to move and forces mate in 2. Black is not helpless: there are 3 advisors still on the board, and every legal defence has been tried against this solution. All of them lose.

楚河漢界士傌傌士將士俥炮帥

The position

Red attacks with 2 horses, a chariot and a cannon, and Black's General stands on e8. Black's defenders: 3 advisors.

  • Mate in 2
  • Chariot finish
  • Rating 1658

Red moves first. Find the move that forces mate whatever Black replies, then open the solution below.

Show the solution

傌 e10–g9 is the only move that wins. Look at what it does: and leaves Black 1 legal reply, none of which help.

The line

  1. Red傌 e10–g9Check. Black must answer.
  2. Black將 e8×e9The toughest try, taking a piece with it.
  3. Red俥 c5–c9Checkmate.

Black has 1 legal moves after the first blow and each was refuted to mate. The main line shown is the toughest defence rather than a convenient one.

楚河漢界士俥將傌士士炮帥

Why it is mate

The chariot arrives on a line the defence cannot close. Chariots are the strongest pieces on the board and most finished attacks end with one, which is why a defender will trade almost anything to swap them off first.

Read about this pattern

How 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

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.