Chess puzzle (Crushing)
Opening: Grunfeld_Defense, Grunfeld_Defense_Three_Knights_Variation
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. e3 O-O 6. c5 b6 7. b4 a5 8. b5 bxc5
9. dxc5 Ne4 10. Nxe4 Bxa1 11. Neg5 Bg4 12. Ba3 Bc3+ 13. Ke2 e5 14. h3 Qxg5 15.
hxg4 Qf6 16. Qxd5 Nd7 17. c6 Nb6 18. Qb3 Bb4 19. Bxb4 *
Position (FEN): r4rk1/2p2p1p/1nP2qp1/pP2p3/1B4P1/1Q2PN2/P3KPP1/5B1R b - - 0 19
Black to move.
Themes:  Middlegame  
Puzzle rating: 1452
Best move: axb4