Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Alapin_Variation
Moves: 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 cxd4 5. cxd4 Nc6 6. Nf3 Bg4 7. Be2 O-O-O
8. Nc3 Qa5 9. d5 Nf6 10. Bc4 Nxd5 11. Bxd5 e6 12. Bxe6+ fxe6 13. Qe2 Nd4 14.
Qc4+ Bc5 15. Nxd4 *
Position (FEN): 2kr3r/pp4pp/4p3/q1b5/2QN2b1/2N5/PP3PPP/R1B1K2R b KQ - 0 15
Black to move.
Themes:  Middlegame  
Puzzle rating: 1040
Best move: Rxd4