Chess puzzle (Advantage)
Moves: 1. d4 d5 2. c4 e5 3. Nc3 exd4 4. Nxd5 c5 5. e3 Nc6 6. exd4 cxd4 7. Nf3 Bg4 8.
Be2 Bd6 9. h3 Be6 10. Nxd4 Bxd5 11. cxd5 Qa5+ 12. Bd2 Qxd5 13. Nxc6 Qxc6 14.
O-O Ne7 15. Bf3 Qa6 16. Qb3 Rb8 17. Rfe1 O-O 18. Bb4 Ng6 19. Rad1 Bxb4 20. Qxb4
Qxa2 *
Position (FEN): 1r3rk1/pp3ppp/6n1/8/1Q6/5B1P/qP3PP1/3RR1K1 w - - 0 21
White to move.
Themes:  Middlegame  
Puzzle rating: 1973
Best move: Ra1