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

Position

White: king a1; queen c1; rook e1; bishop g2; knights e6/g5; pawns a2/b2/c2/f4/g3/h2. Black: king g8; queen b4; rook d8; bishop b7; knights c3/c4; pawns a6/b5/e4/f5/g6/h7. Material is balanced. Black to move.

Solution (4 moves)

1. Opponent setup: Nxd8 — knight e6→d8, captures rook. Now Black to move.
2. Best move: Nxa2 — knight c3→a2, captures pawn. Opponent replies Kxa2 (king a1→a2, captures knight).
3. Best move: Qa5+ — queen b4→a5, gives check. Opponent replies Kb1 (king a2→b1).
4. Best move: Nd2+ — knight c4→d2, gives check. Opponent replies Qxd2 (queen c1→d2, captures knight).
5. Best move: Qxd2 — queen a5→d2, captures queen.

Tactical themes

advantage, attraction, fork, middlegame, sacrifice, very long. The key move Nxa2 wins material.

Position data

FEN: 3r2k1/1b5p/p3N1p1/1p3pN1/1qn1pP2/2n3P1/PPP3BP/K1Q1R3 w - - 0 30

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