Chess Puzzle #wIrbP — Master, Black to move, middlegame

Position

White: king c1; rooks d1/h1; knight c3; pawns b2/c2/e4/f2/g2/h3. Black: king g8; rooks a5/d8; knight e5; pawns b5/d6/f6/f7/h7. White is ahead by 1 point of material. Black to move.

Solution (3 moves)

1. Opponent setup: Kb1 — king c1→b1. Now Black to move.
2. Best move: b4 — pawn b5→b4. Opponent replies Rd5 (rook d1→d5).
3. Best move: Ra6 — rook a5→a6. Opponent replies Na4 (knight c3→a4).
4. Best move: Rxa4 — rook a6→a4, captures knight.

Tactical themes

advantage, endgame, long, quiet move. The key move is b4.

Position data

FEN: 3r2k1/5p1p/3p1p2/rp2n3/4P3/2N4P/1PP2PP1/2KR3R w - - 2 20

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