Chess puzzle (Crushing)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Semi-Tarrasch_Defense
Moves: 1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. Nc3 c5 5. cxd5 Nxd5 6. dxc5 Bxc5 7. e3 Bb4 8.
Qb3 Bxc3+ 9. bxc3 Qb6 10. Bd2 O-O 11. Rb1 Nd7 12. Be2 Nc5 13. Qc4 *
Position (FEN): r1b2rk1/pp3ppp/1q2p3/2nn4/2Q5/2P1PN2/P2BBPPP/1R2K2R b K - 8 13
Black to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 944
Best move: Qxb1+