Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Zukertort_Variation
Moves: 1. d4 d5 2. Nf3 e6 3. Bf4 Nf6 4. e3 a6 5. Bd3 c5 6. c3 Nc6 7. Nbd2 c4 8. Bc2
Bd6 9. Bxd6 Qxd6 10. Qe2 O-O 11. O-O Re8 12. Rfe1 e5 13. dxe5 Nxe5 14. Nxe5
Rxe5 15. Rad1 b5 16. Nf3 Rh5 17. Rd4 Bg4 18. g3 Rh3 *
Position (FEN): r5k1/5ppp/p2q1n2/1p1p4/2pR2b1/2P1PNPr/PPB1QP1P/4R1K1 w - - 1 19
White to move.
Themes:  Middlegame  
Puzzle rating: 1625
Best move: Rxg4