Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Other_variations
Moves: 1. d4 d5 2. e3 Nf6 3. Nd2 Nc6 4. c3 Bg4 5. Be2 Bxe2 6. Qxe2 e5 7. Ngf3 e4 8.
Ne5 Nxe5 9. dxe5 Nd7 10. f4 exf3 11. Nxf3 Qe7 12. Qb5 c6 13. Qxb7 Rb8 14. Qxa7
g6 15. O-O Bg7 16. b4 O-O 17. Ba3 *
Position (FEN): 1r3rk1/Q2nqpbp/2p3p1/3pP3/1P6/B1P1PN2/P5PP/R4RK1 b - - 2 17
Black to move.
Themes:  Middlegame  
Puzzle rating: 1420
Best move: Ra8