Chess Puzzle #pAd1v — Advanced, Black to move, middlegame

Position

White: king g1; queen a6; rook a1; bishops d4/g2; pawns e4/f2/g3/h2. Black: king g8; queen c2; bishop f8; knight d3; pawns a2/e5/f7/g6/h7. White is ahead by 4 points of material. Black to move.

Solution (2 moves)

1. Opponent setup: Be3 — bishop d4→e3. Now Black to move.
2. Best move: Qb1+ — queen c2→b1, gives check. Opponent replies Rxb1 (rook a1→b1, captures queen).
3. Best move: axb1=Q+ — pawn a2→b1, captures rook, promotes to queen, gives check.

Tactical themes

advanced pawn, equality, middlegame, promotion, short. The key move axb1=Q+ captures with check, forcing a response.

Position data

FEN: 5bk1/5p1p/Q5p1/4p3/3BP3/3n2P1/p1q2PBP/R5K1 w - - 0 30

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