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Attack on the uncastled king: queen to b8 (h2·2)

Shuffle Rating 1630Theme: Uncastled king: the enemy king is stuck in the centre — punish it before it castles.
White to move — find the best continuation

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The tactical motive

Uncastled king: the enemy king is stuck in the centre — punish it before it castles.

Mate in 3: a forced sequence that ends in checkmate.

Chess960 twist: use the unusual starting setup of the pieces.

Difficulty 1630 ShuffleRating — for advanced tacticians.

White to move — find the best continuation

Position on the board

White: king h1, queen h2, rook b1 f1, bishop e1, knight c1, pawn a2 b2 g2 c3 g5 f6.

Black: king f8, queen e4, rook b8 g8, pawn c4 g4 h5 a7 b7 f7.

12 white and 10 black pieces are on the board; the puzzle position arises after move 22.

Solution & explanation

Main line

22. Qxb8+ Qe8 23. Qd6+ Qe7 24. Qxe7#

Why it works

  • Great move! queen to b8 keeps the pressure (#2).
  • Well found: queen to d6 (#1).
  • Precise: queen to e7 is the top choice (#).
  • The line ends in a forced mate in 3.
  • If instead Qe8, then Qd6+ and you win the rook.

Types in this puzzle

Supported queen mate

The queen delivers mate face to face, protected by a friend.

The supported queen mate is the most common pattern of all: the queen lands next to the king and mates because a friendly piece or pawn protects her. The king is helpless — capturing is impossible, and the queen covers every neighboring square herself. Hunt for a protected square beside the enemy king: a knight, bishop or pawn eyeing it turns her invasion into mate. Verify one thing — that the square really is defended, or the king eats her.

Mate in 3

A forced checkmate in three moves.

Mate in three is a forced staircase: each of your moves narrows the opponent's choices, and the third one ends the game. Look for the start among checks and sacrifices — quiet first moves are rare in mating problems, but deliciously sneaky. Keep the tree in your head: every defense gets its own branch. Do not stop calculating after move two — see the final mating picture with your own eyes.

Counter-strike

Don't defend — answer the threat with a bigger one.

The counter-strike: instead of defending against the threat, you answer with a bigger threat of your own. While your opponent grabs a pawn, you deliver mate — the arithmetic favors you. Look for a counter when direct defenses fail: do you have a check, an attack on the queen, a mating threat? The beginner's error is meeting every threat with a reflexive defense without checking the counterattacking resources first.

Provenance

Mined from the project's engine self-play games.

Verified by Stockfish at depth 20+.

Solution forcedness confirmed (verified).

Pack 013

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