Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Accelerated_London_System
Moves: 1. d4 d5 2. Bf4 e6 3. e3 Nf6 4. h3 c5 5. Nf3 Nc6 6. b3 Qa5+ 7. Qd2 cxd4 8. Nxd4
Bb4 9. c3 Ne4 10. cxb4 *
Position (FEN): r1b1k2r/pp3ppp/2n1p3/q2p4/1P1NnB2/1P2P2P/P2Q1PP1/RN2KB1R b KQkq - 0 10
Black to move.
Themes:  Middlegame  
Puzzle rating: 1923
Best move: Nxb4