Chess Puzzle #lkvO9 — Master, Black to move, middlegame

Position

White: king c2; rook a1; knight d4; pawns a7/b2/c3/d5. Black: king a8; bishop f6; knights c6/f8; pawns d6/e3/f3/g4. Black is ahead by 1 point of material. Black to move.

Solution (4 moves)

1. Opponent setup: Nxc6 — knight d4→c6, captures knight. Now Black to move.
2. Best move: e2 — pawn e3→e2. Opponent replies Ra4 (rook a1→a4).
3. Best move: e1=Q — pawn e2→e1, promotes to queen. Opponent replies Rb4 (rook a4→b4).
4. Best move: Qf2+ — queen e1→f2, gives check. Opponent replies Kb3 (king c2→b3).
5. Best move: Qxa7 — queen f2→a7, captures pawn.

Tactical themes

advanced pawn, advantage, endgame, promotion, very long. The key move is e2.

Position data

FEN: k4n2/P7/2np1b2/3P4/3N2p1/2P1pp2/1PK5/R7 w - - 0 52

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