Chess Puzzle #shGn9 — Expert, White to move, middlegame

Position

White: king c1; queen c2; rooks g1/g6; knight d2; pawns b4/c3/d4/f4. Black: king g8; queen e3; rooks a8/b7; knight c6; pawns a2/c7/d5/e6/h7. Black is ahead by 1 point of material. White to move.

Solution (4 moves)

1. Opponent setup: Kf7 — king g8→f7. Now White to move.
2. Best move: Rg7+ — rook g6→g7, gives check. Opponent replies Ke8 (king f7→e8).
3. Best move: Rg8+ — rook g7→g8, gives check. Opponent replies Kd7 (king e8→d7).
4. Best move: R1g7+ — rook g1→g7, gives check. Opponent replies Kd6 (king d7→d6).
5. Best move: Rxa8 — rook g8→a8, captures rook.

Tactical themes

advantage, middlegame, very long. The key move is Rg7+.

Position data

FEN: r5k1/1rp4p/2n1p1R1/3p4/1P1P1P2/2P1q3/p1QN4/2K3R1 b - - 0 30

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