Chess puzzle (Advantage)
Opening: Horwitz_Defense, Horwitz_Defense_Other_variations
Moves: 1. d4 e6 2. Bf4 d5 3. e3 c5 4. c3 a6 5. Nf3 Bd7 6. Nbd2 Nc6 7. Bd3 c4 8. Bc2 b5
9. b3 Nf6 10. a4 Be7 11. axb5 axb5 12. Rxa8 Qxa8 13. bxc4 bxc4 14. O-O O-O 15.
Qa1 Rb8 16. Qxa8 *
Position (FEN): Qr4k1/3bbppp/2n1pn2/3p4/2pP1B2/2P1PN2/2BN1PPP/5RK1 b - - 0 16
Black to move.
Themes:  Middlegame  
Puzzle rating: 846
Best move: Rxa8