Chess Puzzle #59eSU — Advanced, Black to move, endgame

Position

White: king f1; rooks b7/c7; knight e4; pawns c3/h4. Black: king d8; rooks a2/f6; knight e2; pawns f3/h7. Material is balanced. Black to move.

Solution (3 moves)

1. Opponent setup: Nxf6 — knight e4→f6, captures rook. Now Black to move.
2. Best move: Ng3+ — knight e2→g3, gives check. Opponent replies Ke1 (king f1→e1).
3. Best move: f2+ — pawn f3→f2, gives check. Opponent replies Kd1 (king e1→d1).
4. Best move: f1=Q# — pawn f2→f1, promotes to queen, delivers checkmate.

Tactical themes

advanced pawn, deflection, endgame, exposed king, long, master, mate, mate in 3, promotion. The combination ends with f1=Q# delivering checkmate.

Position data

FEN: 3k4/1RR4p/5r2/8/4N2P/2P2p2/r3n3/5K2 w - - 0 33

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