Chess puzzle (Crushing)
Opening: English_Opening, English_Opening_Kings_English_Variation
Moves: 1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3 4. bxc3 Nf6 5. Bg2 d5 6. cxd5 Nxd5 7. Nf3 Nc6 8.
d3 Nxc3 9. Qb3 Nd5 10. Ba3 Be6 11. Qxb7 Na5 12. Qb4 *
Position (FEN): r2qk2r/p1p2ppp/4b3/n2np3/1Q6/B2P1NP1/P3PPBP/R3K2R b KQkq - 2 12
Black to move.
Themes:  Middlegame  
Puzzle rating: 828
Best move: Nxb4