Chess Puzzle #OfRXP — Advanced, Black to move, middlegame

Position

White: king g1; queen c2; rooks c1/f1; pawns a4/b3/c4/d5/f2/g3/h3. Black: king a8; queen d7; rook g8; bishop b7; knight c5; pawn h5. White is ahead by 5 points of material. Black to move.

Solution (2 moves)

1. Opponent setup: Kh2 — king g1→h2. Now Black to move.
2. Best move: Bc8 — bishop b7→c8. Opponent replies Rce1 (rook c1→e1).
3. Best move: Qxh3+ — queen d7→h3, captures pawn, gives check.

Why this works

After 41.Kh2, Black's queen and rook on the g-file converge on White's exposed king. The quiet move 1...Bc8 is the pivot: it unpins the queen from defending the bishop and prepares to reroute the bishop to the a6–f1 diagonal, where it will control critical escape squares. White's 2.Re1 tries to defend along the first rank, but 2...Qxh3+ is check, and the king has no safe square. The g3 pawn blocks g2, the f-pawn blocks f1, and the bishop on c8 now controls the long diagonal, preventing any king retreat. The rook on g8 cuts off h-file escape routes. White's heavy pieces arrive too late to interpose.

What to practice

Recognize when a quiet move improves piece coordination in a forced attack. Here, moving the bishop out of the queen's line (unpinning it) while simultaneously activating the bishop on a new diagonal is a defensive clearance that becomes an offensive setup. The pattern is: when your attacking pieces block each other's lines, a quiet repositioning move that clears those lines often forces immediate tactical gains on the next move. Train yourself to see these one-tempo improvements as part of a forced sequence, not as slow maneuvering.

Tactical themes

equality, middlegame, quiet move, short. The key move Qxh3+ captures with check, forcing a response.

Position data

FEN: k5r1/1b1q4/8/2nP3p/P1P5/1P4PP/2Q2P2/2R2RK1 w - - 1 41

Solve this puzzle interactively on Brilliant Knight — free tactics training powered by Stockfish 18, no signup required.