Chess Puzzle #UzHHb — Expert, White to move, middlegame

Position

White: king f2; rook h1; bishops c3/f1; knight f5; pawns a2/b2/e3/f3/h2. Black: king e8; queen c4; rook g8; knight d8; pawns a7/b7/c5/f7/h7. Black is ahead by 3 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Qxa2 — queen c4→a2, captures pawn. Now White to move.
2. Best move: Bc4 — bishop f1→c4. Opponent replies Qa4 (queen a2→a4).
3. Best move: Bb5+ — bishop c4→b5, gives check. Opponent replies Qxb5 (queen a4→b5, captures bishop).
4. Best move: Nd6+ — knight f5→d6, gives check. Opponent replies Ke7 (king e8→e7).
5. Best move: Nxb5 — knight d6→b5, captures queen.

Tactical themes

advantage, attraction, fork, middlegame, sacrifice, very long. The key move is Bc4.

Position data

FEN: 3nk1r1/pp3p1p/8/2p2N2/2q5/2B1PP2/PP3K1P/5B1R b - - 3 21

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