Chess Puzzle #UUzRG — Master, Black to move, middlegame

Position

White: king c1; queen g7; rooks d1/h1; knight f3; pawns a3/b2/d4/g2/h3. Black: king c8; queen e4; rooks e2/e8; knight c6; pawns a7/b7/d5/g3. White is ahead by 1 point of material. Black to move.

Solution (4 moves)

1. Opponent setup: Rd2 — rook d1→d2. Now Black to move.
2. Best move: Na5 — knight c6→a5. Opponent replies Qg4+ (queen g7→g4, gives check).
3. Best move: Qxg4 — queen e4→g4, captures queen. Opponent replies hxg4 (pawn h3→g4, captures queen).
4. Best move: Nb3+ — knight a5→b3, gives check. Opponent replies Kd1 (king c1→d1).
5. Best move: Nxd2 — knight b3→d2, captures rook.

Tactical themes

advantage, fork, middlegame, quiet move, very long. The key move is Na5.

Position data

FEN: 2k1r3/pp4Q1/2n5/3p4/3Pq3/P4NpP/1P2r1P1/2KR3R w - - 4 24

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