[Event "Chigorin mem"]
[Site "Sochi"]
[Date "1965.??.??"]
[Round "4"]
[White "Krogius, Nikolai V"]
[Black "Unzicker, Wolfgang"]
[Result "1/2-1/2"]
[WhiteElo ""]
[BlackElo ""]
[ECO "E53"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O Nbd7 8.Qe2 a6
9.a3 Ba5 10.a4 dxc4 11.Bxc4 b6 12.Rd1 Bb7 13.d5 exd5 14.Nxd5 Nxd5 15.Bxd5 Bxd5
16.Rxd5 Qe7 17.e4 Nf6 18.Re5 Qb7 19.Bg5 Nd7 20.Rd5 Rfe8 21.Rad1 Nf8 22.h4 Qc6
23.Qc2 Qe6 24.e5 h6 25.Be3 Qg4 26.b3 Ng6 27.Qc4 Qf5 28.Qd3 Qg4  1/2-1/2

