Chess Puzzle #bObVB — Expert, White to move, endgame

Position

White: king h1; queen c6; rook e1; bishop c3. Black: king g8; queen f2; bishops b6/f5; pawns a7/f7/g7/h6. Black is ahead by 2 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Bh3 — bishop f5→h3. Now White to move.
2. Best move: Re8+ — rook e1→e8, gives check. Opponent replies Kh7 (king g8→h7).
3. Best move: Rh8+ — rook e8→h8, gives check. Opponent replies Kxh8 (king h7→h8, captures rook).
4. Best move: Qxh6+ — queen c6→h6, captures pawn, gives check. Opponent replies Kg8 (king h8→g8).
5. Best move: Qxg7# — queen h6→g7, captures pawn, delivers checkmate.

Tactical themes

attraction, deflection, endgame, mate, mate in 4, pin, sacrifice, very long. The combination ends with Qxg7# delivering checkmate.

Position data

FEN: 6k1/p4pp1/1bQ4p/5b2/8/2B5/5q2/4R2K b - - 9 38

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