[Event "Chigorin Memorial-11"]
[Site "Sochi"]
[Date "1976.??.??"]
[Round "11"]
[White "Estevez Morales, Guillermo"]
[Black "Zaitsev, Igor A"]
[Result "1/2-1/2"]
[WhiteElo "2360"]
[BlackElo "2165"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. O-O-O h6 9. Be3 Bd7 10. f3 b5 11. g4 Ne5 12. g5 hxg5 13. Bxg5 Be7 14. f4 b4 15. Nce2 Nc4 16. Qd3 Qc7 17. Ng3 Rc8 18. Be2 a5 19. Kb1 a4 20. Rc1 Qb6 21. h4 Nxb2 22. Qd2 Nc4 1/2-1/2