Chess Puzzle #EaqhQ — Advanced, Black to move, middlegame

Position

White: king h2; queen d2; rook a1; pawns a2/c4/e6/f2/h4. Black: king g8; rooks f8/g4; bishop e4; pawns a7/b6/c5/c7/g6/h7. Material is balanced. Black to move.

Solution (4 moves)

1. Opponent setup: Rf1 — rook a1→f1. Now Black to move.
2. Best move: Rg2+ — rook g4→g2, gives check. Opponent replies Kh3 (king h2→h3).
3. Best move: Rf3+ — rook f8→f3, gives check. Opponent replies Kxg2 (king h3→g2, captures rook).
4. Best move: Rd3+ — rook f3→d3, gives check. Opponent replies Kg1 (king g2→g1).
5. Best move: Rxd2 — rook d3→d2, captures queen.

Tactical themes

crushing, discovered attack, endgame, exposed king, sacrifice, very long. The key move is Rg2+.

Position data

FEN: 5rk1/p1p4p/1p2P1p1/2p5/2P1b1rP/8/P2Q1P1K/R7 w - - 4 27

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