Chess Puzzle #inf2L — Master, Black to move, middlegame

Position

White: king b1; queen e1; rook g6; bishop e7; pawns a3/b2/c2/h4. Black: king b7; queen f3; rook d5; bishop f2; pawns a6/b5/f5. White is ahead by 1 point of material. Black to move.

Solution (6 moves)

1. Opponent setup: Qa5 — queen e1→a5. Now Black to move.
2. Best move: Rd1+ — rook d5→d1, gives check. Opponent replies Ka2 (king b1→a2).
3. Best move: Qd5+ — queen f3→d5, gives check. Opponent replies b3 (pawn b2→b3).
4. Best move: Bd4 — bishop f2→d4. Opponent replies Qxa6+ (queen a5→a6, captures pawn, gives check).
5. Best move: Kc7 — king b7→c7. Opponent replies Qd6+ (queen a6→d6, gives check).
6. Best move: Qxd6 — queen d5→d6, captures queen. Opponent replies Bxd6+ (bishop e7→d6, captures queen, gives check).
7. Best move: Kd7 — king c7→d7.

Tactical themes

advantage, endgame, quiet move, very long. The key move is Rd1+.

Position data

FEN: 8/1k2B3/p5R1/1p1r1p2/7P/P4q2/1PP2b2/1K2Q3 w - - 0 33

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