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

Position

White: king e1; queen d3; rooks a1/h1; knights a3/d2; pawns a2/b2/c3/d4/e3/f3/h2. Black: king d8; rooks c8/g2; bishops d7/f8; knights c6/f5; pawns a7/b6/d5/d6/e7. White is ahead by 5 points of material. Black to move.

Solution (2 moves)

1. Opponent setup: O-O-O — king e1→c1. Now Black to move.
2. Best move: Nb4 — knight c6→b4. Opponent replies Qb1 (queen d3→b1).
3. Best move: Nxe3 — knight f5→e3, captures pawn.

Tactical themes

equality, middlegame, pin, short. The key move is Nb4.

Position data

FEN: 2rk1b2/p2bp3/1pnp4/3p1n2/3P4/N1PQPP2/PP1N2rP/R3K2R w KQ - 2 18

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