Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Colle_System
Moves: 1. Nf3 Nf6 2. d4 g6 3. e3 d5 4. Bd3 Bg7 5. O-O Nbd7 6. Nbd2 c5 7. c3 O-O 8. Re1
b6 9. e4 dxe4 10. Bxe4 Nxe4 11. Rxe4 Bb7 12. Rh4 Rc8 13. Qe2 Nf6 14. dxc5 Rxc5
15. Nb3 Rd5 16. Bh6 Bxh6 17. Rxh6 Kg7 18. Rh4 Ba6 *
Position (FEN): 3q1r2/p3ppkp/bp3np1/3r4/7R/1NP2N2/PP2QPPP/R5K1 w - - 3 19
White to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1217
Best move: Qxa6