Chess puzzle (Crushing)
Moves: 1. d4 e5 2. d5 d6 3. c4 c6 4. e4 Nf6 5. Nc3 cxd5 6. cxd5 Bd7 7. Qc2 Be7 8. a4
O-O 9. Bb5 a6 10. Bd3 Qb6 11. Be3 Qd8 12. Nf3 a5 13. O-O Na6 14. Be2 Ng4 15.
Bd2 Nb4 16. Qb1 f5 17. h3 fxe4 18. hxg4 exf3 19. Bxf3 b6 20. Ne4 Rc8 21. Bxb4
axb4 22. b3 Rc7 23. Nd2 Qc8 24. Nc4 Rb7 25. Qd1 Rf6 26. Rc1 Qf8 27. Re1 Rh6 28.
Re4 Qf6 29. g3 Qf8 30. Bg2 Rf6 31. Qe2 b5 32. Na5 Ra7 33. Nc6 Ra8 34. Rxb4 bxa4
35. Rb7 Bxc6 36. dxc6 a3 37. c7 a2 38. Qc4+ Kh8 39. c8=Q Rxc8 40. Qxc8 Qxc8 41.
Rxc8+ Bf8 42. Rbb8 *
Position (FEN): 1RR2b1k/6pp/3p1r2/4p3/6P1/1P4P1/p4PB1/6K1 b - - 2 42
Black to move.
Themes: Advanced Pawn Endgame  Promotion
Puzzle rating: 1070
Best move: a1=Q+