Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Accelerated_London_System
Moves: 1. d4 d5 2. Bf4 e6 3. Nf3 c5 4. c3 Bd6 5. Bxd6 Qxd6 6. e3 Nf6 7. Nbd2 Nc6 8. b4
cxb4 9. cxb4 Nxb4 10. Rb1 Nxa2 11. Qa4+ Bd7 12. Qxa2 b6 13. Rxb6 *
Position (FEN): r3k2r/p2b1ppp/1R1qpn2/3p4/3P4/4PN2/Q2N1PPP/4KB1R b Kkq - 0 13
Black to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1117
Best move: Qxb6