Chess Puzzle #45Nby — Intermediate, Black to move, endgame

Position

White: king g2; queen e6; rooks a1/c1; pawns a6/d4/f2/f4. Black: king h8; queen h7; rook g8; pawn e4. White is ahead by 8 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Kf1 — king g2→f1. Now Black to move.
2. Best move: Qh1+ — queen h7→h1, gives check. Opponent replies Ke2 (king f1→e2).
3. Best move: Qf3+ — queen h1→f3, gives check. Opponent replies Kd2 (king e2→d2).
4. Best move: Qd3+ — queen f3→d3, gives check. Opponent replies Ke1 (king d2→e1).
5. Best move: Rg1# — rook g8→g1, delivers checkmate.

Tactical themes

endgame, mate, mate in 4, very long. The combination ends with Rg1# delivering checkmate.

Position data

FEN: 6rk/7q/P3Q3/8/3PpP2/8/5PK1/R1R5 w - - 1 40

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