Chess puzzle (Crushing)
Opening: French_Defense, French_Defense_Advance_Variation
Moves: 1. e4 e6 2. d4 d5 3. e5 c5 4. Nf3 Nc6 5. Bb5 Bd7 6. Nc3 Qa5 7. Bxc6 bxc6 8. O-O
cxd4 9. Nxd4 Bc5 10. Nb3 Qb6 *
Position (FEN): r3k1nr/p2b1ppp/1qp1p3/2bpP3/8/1NN5/PPP2PPP/R1BQ1RK1 w kq - 3 11
White to move.
Themes:  Opening  
Puzzle rating: 1478
Best move: Na4