Chess Puzzle #Gj2I4 — Advanced, Black to move, middlegame

Position

White: king f2; queen c7; bishops a7/c6; knight a1; pawns a2/c3/g5. Black: king f8; rooks d8/h2; knight f5; pawns b6/e6/f7/g7. White is ahead by 4 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Kf3 — king f2→f3. Now Black to move.
2. Best move: Rd3+ — rook d8→d3, gives check. Opponent replies Kf4 (king f3→f4).
3. Best move: Rh4+ — rook h2→h4, gives check. Opponent replies Ke5 (king f4→e5).
4. Best move: Re3+ — rook d3→e3, gives check. Opponent replies Be4 (bishop c6→e4).
5. Best move: Rexe4# — rook e3→e4, captures bishop, delivers checkmate.

Tactical themes

exposed king, mate, mate in 4, middlegame, very long. The combination ends with Rexe4# delivering checkmate.

Position data

FEN: 3r1k2/B1Q2pp1/1pB1p3/5nP1/8/2P5/P4K1r/N7 w - - 1 31

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