Chess puzzle (Advantage)
Opening: Nimzowitsch_Defense, Nimzowitsch_Defense_French_Connection
Moves: 1. e4 e6 2. Nc3 Nc6 3. Nf3 Bc5 4. Bc4 Nf6 5. d4 Bb4 6. Bd2 O-O 7. O-O b6 8. e5
Ne8 9. Ne4 Bb7 10. Re1 d5 11. Bxb4 *
Position (FEN): r2qnrk1/pbp2ppp/1pn1p3/3pP3/1BBPN3/5N2/PPP2PPP/R2QR1K1 b - - 0 11
Black to move.
Themes:  Opening  
Puzzle rating: 936
Best move: Nxb4