[Event "World-ch21 Botvinnik-Symslov +7-5=11"]
[Site "Moscow"]
[Date "1958.04.29"]
[Round "20"]
[White "Botvinnik, Mikhail"]
[Black "Smyslov, Vassily V"]
[Result "1/2-1/2"]

1. c4 c5 2. Nf3 f5 3. d4 cxd4 4. Nxd4 g6 5. g3 Bg7 6. Bg2 Nc6 7. Nb5 Nf6 8. N5c3 O-O 9. O-O b6 10. b3 Bb7 11. Bb2 Rf7 12. Qd2 Qf8 13. Na3 Rd8 14. Rad1 Na5 15. Bxb7 Nxb7 16. Nab5 a6 17. Nd4 Bh6 18. Qc2 f4 19. Nf3 d6 20. Nd4 Ra8 21. Nd5 Nxd5 22. cxd5 Rc8 23. Qb1 Qe8 24. Ba3 Nd8 25. Qe4 Qd7 26. Kg2 Qg4 27. f3 Qh5 28. Ne6 Qf5 29. Nd4 Qxe4 30. fxe4 fxg3 31. Rxf7 Kxf7 32. hxg3 Bg7 33. Bb2 b5 34. Rd2 Ke8 35. Kf2 Kd7 36. Nf3 Bxb2 37. Rxb2 Nf7 38. Ke3 Rc3+ 39. Kd2 b4 40. Rb1 h5 41. a3 a5 42. axb4 axb4 43. Ra1 Nh6 44. Ra7+ Ke8 45. Ra8+ Kf7 46. e5 dxe5 47. Ng5+ Kg7 48. Ne6+ 1/2-1/2