Chess puzzle (Advantage)
Moves: 1. e4 a6 2. d4 b5 3. a4 Bb7 4. Bd3 Nf6 5. Qe2 g6 6. Nf3 b4 7. O-O Bg7 8. c4
bxc3 9. bxc3 O-O 10. c4 d6 11. Nc3 Nbd7 12. Rb1 Rb8 13. Re1 a5 14. Bd2 Nb6 15.
Nd5 Nxa4 16. Bxa5 Bxd5 17. Rxb8 Qxb8 18. exd5 Re8 19. h3 Qa7 20. Bb4 Nd7 21.
Qa2 Bxd4 *
Position (FEN): 4r1k1/q1pnpp1p/3p2p1/3P4/nBPb4/3B1N1P/Q4PP1/4R1K1 w - - 0 22
White to move.
Themes:  Middlegame  
Puzzle rating: 1242
Best move: Nxd4