Chess puzzle (Crushing)
Moves: 1. d4 d5 2. Nc3 Nf6 3. Bf4 a6 4. e3 e6 5. g4 c5 6. g5 Nfd7 7. Nf3 Nc6 8. a3 b5
9. h4 b4 10. axb4 cxb4 11. Na4 Nb6 12. c3 Nxa4 13. Qxa4 Bd7 14. Qc2 a5 15. Bb5
Qb6 16. Ba4 Be7 17. h5 Rc8 18. h6 g6 19. Ne5 Nxe5 20. Bxe5 Bxa4 *
Position (FEN): 2r1k2r/4bp1p/1q2p1pP/p2pB1P1/bp1P4/2P1P3/1PQ2P2/R3K2R w KQk - 0 21
White to move.
Themes:  Middlegame  
Puzzle rating: 980
Best move: Qxa4+