[Event "URS-ch25 Semifinal"]
[Site "Sverdlovsk"]
[Date "1957.11.12"]
[Round "2"]
[White "Vladimirov, Boris T"]
[Black "Aronson, Lev Abramovich"]
[Result "1/2-1/2"]
1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 Be7 7. f4 O-O 8. Nf3 Re8 9. Be2 Bf8 10. Qc2 Na6 11. O-O g6 12. a3 Nc7 13. b4 Bg7 14. Rb1 cxb4 15. axb4 Bg4 16. h3 Bxf3 17. Bxf3 Rc8 18. Qd3 Nd7 19. Bd2 a6 20. Rfc1 Na8 21. Be3 Qe7 22. Ne2 Nf6 1/2-1/2