[Event "URS-ch25 Quarterfinal"]
[Site "Minsk"]
[Date "1957.05.02"]
[Round "6"]
[White "Ostrauskas, A"]
[Black "Petersons, Andrejs"]
[Result "1/2-1/2"]

1. e4 c5 2. Ne2 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Nb3 a6 8. g3 Be7 9. Bg2 O-O 10. O-O Qc7 11. Qe2 b5 12. a3 Bb7 13. f4 h6 14. Bh4 Rad8 15. Rae1 Kh8 16. Rf2 Qb6 17. e5 dxe5 18. fxe5 Ng8 19. Bxe7 Ngxe7 20. Qe3 Qxe3 21. Rxe3 Bc8 22. Nc5 Rd4 23. Rd3 Rxd3 24. Nxd3 Kg8 25. Ne4 Nd5 26. Nd6 Nce7 27. Nc5 Ng6 28. Re2 Nb6 29. b3 Nd7 30. Nd3 h5 31. Nxc8 Rxc8 32. Bb7 Rb8 33. Bxa6 Rb6 34. Bc8 Nb8 35. Nb4 Kf8 36. c4 bxc4 37. bxc4 Nc6 38. c5 Rb8 39. Ba6 Nxb4 40. axb4 Rxb4 41. Rc2 Nxe5 42. c6 Nxc6 43. Rxc6 h4 44. Kg2 hxg3 45. hxg3 Ke7 46. Rc7+ Kf6 47. Bc8 g5 48. Bd7 Ke5 49. Bc8 Kf6 50. Kh3 Rd4 51. Ba6 Kg6 52. Bc4 Rd2 53. Kg4 Rf2 1/2-1/2