Chess puzzle (Advantage)
Opening: Indian_Defense, Indian_Defense_Other_variations
Moves: 1. d4 Nf6 2. e3 g6 3. Bd3 Bg7 4. Nf3 h6 5. c4 d5 6. cxd5 Nxd5 7. Nc3 Nb4 8.
Qa4+ N8c6 9. Bb5 O-O 10. a3 a6 *
Position (FEN): r1bq1rk1/1pp1ppb1/p1n3pp/1B6/Qn1P4/P1N1PN2/1P3PPP/R1B1K2R w KQ - 0 11
White to move.
Themes:  Opening  
Puzzle rating: 1731
Best move: axb4