Chess Puzzle #8rGcL — Expert, White to move, endgame

Position

White: king d4; rook g6; bishop e4; pawns d6/e5. Black: king e7; queen g3; bishop g4; pawn h2. Black is ahead by 3 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Kd8 — king e7→d8. Now White to move.
2. Best move: Rg8+ — rook g6→g8, gives check. Opponent replies Kd7 (king d8→d7).
3. Best move: Rg7+ — rook g8→g7, gives check. Opponent replies Ke8 (king d7→e8).
4. Best move: Rg8+ — rook g7→g8, gives check. Opponent replies Kf7 (king e8→f7).
5. Best move: Bd5+ — bishop e4→d5, gives check.

Tactical themes

endgame, equality, exposed king, very long. The key move is Rg8+.

Position data

FEN: 8/4k3/3P2R1/4P3/3KB1b1/6q1/7p/8 b - - 0 51

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