[Event "URS-ch25 Quarterfinal"]
[Site "Minsk"]
[Date "1957.04.29"]
[Round "4"]
[White "Petersons, Andrejs"]
[Black "Sokolsky, Alexey Pavlovich"]
[Result "1-0"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O c6 7. Qc2 b6 8. Nbd2 Ba6 9. b3 Nbd7 10. e4 Rc8 11. Bb2 c5 12. exd5 exd5 13. Rfd1 b5 14. cxb5 Bxb5 15. Rac1 c4 16. Bf1 Nb6 17. Qb1 Rb8 18. Ne5 Bb4 19. bxc4 Bxd2 20. Rxd2 Ne4 21. Re2 Nxc4 22. Nxc4 Bxc4 23. Rxc4 dxc4 24. Qxe4 Qa5 25. Qe5 Rb5 26. d5 f6 27. Qe6+ Kh8 28. Qe7 Rbb8 29. d6 c3 30. Bc1 Qa4 31. d7 h6 32. Bf4 Ra8 33. Re4 Qd1 34. Rc4 c2 35. Rc7 Rad8 36. Qe6 a5 37. Kg2 h5 38. Qf5 g5 39. Bd3 Rf7 40. Rc8 1-0