Chess Puzzle #1oN9N — Beginner, Black to move, middlegame

Position

White: king g1; queen h5; rooks a1/f1; bishops c1/f7; knight b1; pawns a2/c3/e4/f3/h2/h6. Black: king h7; queen h3; rook a8; bishops b6/c8; knights c6/e7; pawns a7/b7/c7/d6/g7. White is ahead by 3 points of material. Black to move.

Solution (1 move)

1. Opponent setup: Kh1 — king g1→h1. Now Black to move.
2. Best move: Qxf1# — queen h3→f1, captures rook, delivers checkmate.

Why this works

Black's queen on h3 delivers checkmate with 1...Qxf1# because the white king on h1 has no escape squares and no piece can interpose or capture the queen. The h2 pawn blocks h2, and g1 is controlled by the queen on f1 along the first rank. The rook on f1 cannot be defended — White's queen on h5 doesn't reach f1, the bishop on c1 is blocked by its own pieces, and no other defender exists. The king is checkmated on h1, a square it moved into on White's setup turn, which created this fatal vulnerability by abandoning g1.

What to practice

When your opponent moves the king away from central squares into a corner, check whether it exposes back-rank weaknesses. Here, the white king retreating to h1 left the f1 rook undefended and the first rank open to your queen. In positions where your queen already attacks the opponent's king's defensive perimeter, a king move that reduces escape squares often creates immediate mating threats.

Tactical themes

hanging piece, kingside attack, mate, mate in 1, middlegame, one move. The combination ends with Qxf1# delivering checkmate.

Position data

FEN: r1b5/ppp1nBpk/1bnp3P/7Q/4P3/2P2P1q/P6P/RNB2RK1 w - - 1 16

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