[Event "URS-ch25 Semifinal"]
[Site "Leningrad"]
[Date "1957.11.21"]
[Round "8"]
[White "Aronin, Lev Solomonovich"]
[Black "Krogius, Nikolai V"]
[Result "1/2-1/2"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d6 9. h3 Na5 10. Bc2 c5 11. d4 Bb7 12. Nbd2 cxd4 13. cxd4 Rc8 14. d5 Qc7 15. Bd3 Nd7 16. Nf1 Nc5 17. Ng3 Nxd3 18. Qxd3 Nc4 19. Nf5 g6 20. Nxe7+ Qxe7 21. b3 Nb6 22. Bh6 Rfe8 23. Ng5 Nd7 1/2-1/2