Chess Puzzle #YojXj — Expert, White to move, middlegame

Position

White: king g1; queen f7; rook f1; bishop h6; knight h4; pawns a3/b4/d3/f5/g3/h2. Black: king h8; queen b5; rooks c2/g8; bishop d6; pawns a6/b7/e6/f6/h7. Black is ahead by 1 point of material. White to move.

Solution (4 moves)

1. Opponent setup: Be5 — bishop d6→e5. Now White to move.
2. Best move: Bg7+ — bishop h6→g7, gives check. Opponent replies Rxg7 (rook g8→g7, captures bishop).
3. Best move: Qf8+ — queen f7→f8, gives check. Opponent replies Rg8 (rook g7→g8).
4. Best move: Ng6+ — knight h4→g6, gives check. Opponent replies hxg6 (pawn h7→g6, captures knight).
5. Best move: Qh6# — queen f8→h6, delivers checkmate.

Tactical themes

kingside attack, mate, mate in 4, middlegame, sacrifice, very long. The combination ends with Qh6# delivering checkmate.

Position data

FEN: 6rk/1p3Q1p/p2bpp1B/1q3P2/1P5N/P2P2P1/2r4P/5RK1 b - - 0 26

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