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棋逢对手

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Red to move. There is exactly one winning first move here, and it mates in 2 against anything Black tries. Black's remaining force: a elephant.

楚河漢界兵俥象將傌傌傌帥

The position

Red attacks with a soldier, a chariot and 3 horses, and Black's General stands on d8. Black's defenders: a elephant.

  • Mate in 2
  • Horse finish
  • Rating 1695

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

Show the solution

It starts with 傌 h8–f9. Look at what it does: and leaves Black 1 legal reply, none of which help.

The line

  1. Red傌 h8–f9Check. Black must answer.
  2. Black將 d8–d9Black's most stubborn defence.
  3. Red傌 i8×g9Checkmate.

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.

楚河漢界兵俥將傌傌傌帥

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 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.