Chess puzzle (Advantage)
Opening: Scandinavian_Defense, Scandinavian_Defense_Modern_Variation
Moves: 1. e4 d5 2. exd5 Nf6 3. d4 Bf5 4. Nf3 Nbd7 5. c4 h6 6. Nc3 g5 7. c5 Bg7 8. c6
bxc6 9. dxc6 Nb6 10. Qb3 O-O 11. Be3 Rb8 12. Qa3 Re8 13. Qxa7 *
Position (FEN): 1r1qr1k1/Q1p1ppb1/1nP2n1p/5bp1/3P4/2N1BN2/PP3PPP/R3KB1R b KQ - 0 13
Black to move.
Themes:  Middlegame  
Puzzle rating: 1371
Best move: Ra8