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

Position

White: king c1; queen b7; rook e1; knight a6; pawns a3/b2/c4/d5/h5. Black: king d8; rooks f1/f8; bishop g7; pawns b6/c7/d6/e5/g2/g5. White is ahead by 3 points of material. Black to move.

Solution (3 moves)

1. Opponent setup: Qb8+ — queen b7→b8, gives check. Now Black to move.
2. Best move: Ke7 — king d8→e7. Opponent replies Qxc7+ (queen b8→c7, captures pawn, gives check).
3. Best move: Kf6 — king e7→f6. Opponent replies Qxd6+ (queen c7→d6, captures pawn, gives check).
4. Best move: Kf5 — king f6→f5.

Tactical themes

advantage, endgame, long, sacrifice. The key move is Ke7.

Position data

FEN: 3k1r2/1Qp3b1/Np1p4/3Pp1pP/2P5/P7/1P4p1/2K1Rr2 w - - 4 41

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