Chess Puzzle #BQurQ — Intermediate, White to move, middlegame

Position

White: king c2; rooks d1/e5; knight g3; pawns a2/b2/f2/h2. Black: king c5; rooks d8/h8; knight f6; pawns a7/b6/c6/f7/g6/h7. Black is ahead by 2 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Kc4 — king c5→c4. Now White to move.
2. Best move: b3+ — pawn b2→b3, gives check. Opponent replies Kb4 (king c4→b4).
3. Best move: a3+ — pawn a2→a3, gives check. Opponent replies Kxa3 (king b4→a3, captures pawn).
4. Best move: Ra1+ — rook d1→a1, gives check. Opponent replies Kb4 (king a3→b4).
5. Best move: Ra4# — rook a1→a4, delivers checkmate.

Tactical themes

attraction, endgame, mate, mate in 4, very long. The combination ends with Ra4# delivering checkmate.

Position data

FEN: 3r3r/p4p1p/1pp2np1/2k1R3/8/6N1/PPK2P1P/3R4 b - - 7 26

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