Botvinnik vs Konstantinopolsky: Sverdlovsk 1943

[Event "Sverdlovsk"][Site "Sverdlovsk (Yekaterinburg) URS"][Date "1943.04.24"][Round "3"][White "Mikhail Botvinnik"][Black "Alexander Konstantinopolsky"][Result "1-0"][ECO "B14"][PlyCount "103"][EventDate "1943.04.??"]   1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Be7 7. Bg5 O-O 8. Rc1  Nc6 9. c5 Ne4 10. Bxe7 Qxe7 11. Be2 Bd7 12. a3 f5 13. Bb5 Ng5 14. Bxc6 Nxf3+  15. Qxf3 bxc6 16. Qf4 Rae8 17. O-O e5 18. Qxe5 Qxe5 19. dxe5 Rxe5 20. f4 Re7  21. Rfe1 Rfe8 22. Rxe7 Rxe7 23. Kf2 Kf7 24. Rd1 Re8 25. Rd2 h6 26. Re2 Rb8 27.  Ke3 Rb3 28. Kd4 Kf6 29. Na2 Rb8 30. b4 g5 31. g3 gxf4 32. gxf4 a6 33. Nc3 Rg8  34. a4 Rg4 35. Rf2 Be6 36. b5 axb5 37. axb5 cxb5 38. Nxb5 Rg1 39. Nc3 Kf7 40.  Rb2 Rf1 41. Ne2 Re1 42. Ke5 d4 43. Kxd4 Kg6 44. Nc3 Kh5 45. Re2 Rxe2 46. Nxe2  Kg4 47. Ke5 Bc8 48. Nd4 h5 49. Nxf5 Bd7 50. Ng7 Ba4 51. f5 Kg5 52. Ne6+ 1-0