[Event "URS-ch25 Semifinal"]
[Site "Sverdlovsk"]
[Date "1957.11.24"]
[Round "9"]
[White "Aronson, Lev Abramovich"]
[Black "Kots, Yury Isakovich"]
[Result "1/2-1/2"]
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 b6 7. cxd5 Nxd5 8. Bxe7 Qxe7 9. Nxd5 exd5 10. Bd3 Bb7 11. O-O c5 12. dxc5 bxc5 13. Rc1 g6 14. Qa4 a5 15. Rfe1 f5 16. Qa3 Rc8 17. Rc2 Rc7 18. Rec1 c4 19. Qxe7 Rxe7 20. Be2 Na6 21. b3 Nb4 22. Rd2 cxb3 23. axb3 Rc8 24. Rxc8+ Bxc8 25. Nd4 Rc7 26. h4 Rc1+ 27. Kh2 Kf7 28. Rd1 Rxd1 29. Bxd1 Bd7 30. Be2 a4 31. bxa4 Bxa4 32. Kg3 Kf6 1/2-1/2