[Event "URS-ch26 Semifinal"]
[Site "Tashkent"]
[Date "1958.??.??"]
[Round "?"]
[White "Petersons, Andrejs"]
[Black "Katalymov, Boris N"]
[Result "0-1"]
1. g3 e5 2. Bg2 Nc6 3. d3 Bc5 4. Nf3 d6 5. O-O Bg4 6. h3 Bd7 7. c3 Qc8 8. Kh2 Nge7 9. d4 Bb6 10. dxe5 dxe5 11. Nbd2 O-O 12. Nc4 f6 13. Nxb6 axb6 14. e4 Be6 15. b3 Rd8 16. Qc2 Qd7 17. Be3 Qd3 18. Qb2 Qa6 19. Rfe1 Qa3 20. Qc2 Rd7 21. Bf1 Rad8 22. Bb5 Nc8 23. Bf1 Qf8 24. Red1 Nd6 25. Rd2 Qf7 26. Rad1 Qh5 27. Nh4 Ne7 28. Be2 Qf7 29. g4 g6 30. Rg1 Kh8 31. Nf3 g5 32. h4 h5 33. Rh1 hxg4 34. hxg5 gxf3 35. Bxf3 f5 36. Kg2+ Kg7 37. Rh6 f4 38. Rf6 fxe3 39. Rxf7+ Nxf7 40. Rxd7 Rxd7 41. fxe3 Nxg5 42. Be2 Nxe4 43. Bd3 Nc5 44. Be2 Bf5 45. Qc1 Ne4 46. Qa3 Nd5 47. Qa8 Nxe3+ 48. Kg1 Kh7 49. Qxb7 Rg7+ 50. Kh1 Nf2+ 51. Kh2 Be4 0-1