Chess puzzle (Advantage)
Opening: Indian_Defense, Indian_Defense_Other_variations
Moves: 1. d4 Nf6 2. Bf4 d6 3. c4 b6 4. g3 c5 5. Bg2 d5 6. cxd5 Bb7 7. Nf3 Bxd5 8. dxc5
bxc5 9. Bxb8 Rxb8 10. Qa4+ Nd7 11. Qxa7 *
Position (FEN): 1r1qkb1r/Q2npppp/8/2pb4/8/5NP1/PP2PPBP/RN2K2R b KQk - 0 11
Black to move.
Themes:  Opening  
Puzzle rating: 1190
Best move: Ra8