Chess Puzzle #nWPps — Advanced, White to move, middlegame

Position

White: king d2; rook c1; bishop f4; knight a4; pawns a3/b2/b3/d3/h3. Black: king c8; rooks d8/h8; bishop f2; knight f6; pawns a7/b7/c7/e6/f7/g6/g7. Black is ahead by 7 points of material. White to move.

Solution (6 moves)

1. Opponent setup: Bb6 — bishop f2→b6. Now White to move.
2. Best move: Nxb6+ — knight a4→b6, captures bishop, gives check. Opponent replies axb6 (pawn a7→b6, captures knight).
3. Best move: Rxc7+ — rook c1→c7, captures pawn, gives check. Opponent replies Kb8 (king c8→b8).
4. Best move: Rc4+ — rook c7→c4, gives check. Opponent replies e5 (pawn e6→e5).
5. Best move: Bxe5+ — bishop f4→e5, captures pawn, gives check. Opponent replies Rd6 (rook d8→d6).
6. Best move: Bxd6+ — bishop e5→d6, captures rook, gives check. Opponent replies Ka7 (king b8→a7).
7. Best move: Ra4# — rook c4→a4, delivers checkmate.

Tactical themes

discovered attack, mate, mate in 5, middlegame, pin, queenside attack, very long. The combination ends with Ra4# delivering checkmate.

Position data

FEN: 2kr3r/ppp2pp1/4pnp1/8/N4B2/PP1P3P/1P1K1b2/2R5 b - - 1 25

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