Chess puzzle (Advantage)
Opening: English_Opening, English_Opening_Kings_English_Variation
Moves: 1. c4 Nf6 2. Nc3 e5 3. g3 c6 4. Bg2 a6 5. e4 Bc5 6. Nge2 O-O 7. O-O h6 8. d4
exd4 9. Nxd4 d5 10. cxd5 cxd5 11. exd5 Bg4 12. Qb3 *
Position (FEN): rn1q1rk1/1p3pp1/p4n1p/2bP4/3N2b1/1QN3P1/PP3PBP/R1B2RK1 b - - 2 12
Black to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 840
Best move: Bxd4