Chess Puzzle #DT6nD — Expert, Black to move, endgame

Position

White: king g2; rook g4; pawns b4/c6/f4/g3/h2. Black: king e3; rook a1; pawns a3/d5. White is ahead by 3 points of material. Black to move.

Solution (3 moves)

1. Opponent setup: b5 — pawn b4→b5. Now Black to move.
2. Best move: a2 — pawn a3→a2. Opponent replies f5 (pawn f4→f5).
3. Best move: Rg1+ — rook a1→g1, gives check. Opponent replies Kxg1 (king g2→g1, captures rook).
4. Best move: a1=Q+ — pawn a2→a1, promotes to queen, gives check.

Tactical themes

advanced pawn, advantage, attraction, endgame, long, promotion, rook endgame. The key move is a2.

Position data

FEN: 8/8/2P5/3p4/1P3PR1/p3k1P1/6KP/r7 w - - 0 51

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