Chess puzzle (Advantage)
Moves: 1. d4 d5 2. e3 Nf6 3. Nf3 c5 4. c4 dxc4 5. Bxc4 cxd4 6. Qb3 e6 7. Nxd4 Qa5+ 8.
Bd2 Qg5 9. Kf1 Bd6 10. Nf3 Qg6 11. Bd3 Qg4 12. h3 Qh5 13. Be2 O-O 14. Nd4 Qe5
15. Nf3 Qd5 16. Bc4 Qh5 17. Qc2 Nc6 18. Bc3 Nd5 19. g4 Qg6 20. Bd3 f5 21. gxf5
exf5 *
Position (FEN): r1b2rk1/pp4pp/2nb2q1/3n1p2/8/2BBPN1P/PPQ2P2/RN3K1R w - - 0 22
White to move.
Themes:  Opening  
Puzzle rating: 1869
Best move: Rg1