[Event "SUI/open5/1 (SUI)"]
[Site "ICCF"]
[Date "2022.12.14"]
[Round "-"]
[White "Welti, Manfred"]
[Black "Birrer, Alfred"]
[Result "1/2-1/2"]
[WhiteElo "2227"]

1.c4 c5 2.g3 Nc6 3.Bg2 g6 4.Nc3 Bg7 5.Nf3 Nf6 
6.d4 O-O 7.O-O d6 8.d5 Na5 9.Nd2 a6 10.Rb1 Rb8 
11.b3 b5 12.Qc2 e5 13.cxb5 axb5 14.b4 cxb4 15.Rxb4 Qc7 
16.Ba3 Bf5 17.Qb2 e4 18.Nxb5 Rxb5 19.Rxb5 Nxd5 20.Qb1 Nc3 
21.Qb4 Nc6 22.Rb7 Qc8 23.Qb6 Bd4 24.Qa6 Na5 25.Ra7 Bxa7 
26.Qxa7 Nc6 27.Qe3 Nd4 28.Bxd6 Rd8 29.Be5 Ndxe2+ 30.Kh1 Rd3 
31.Qh6 Qf8 32.Qxf8+ Kxf8 33.Nc4 Nxa2 34.Ne3 Nec3 35.g4 Be6 
36.g5 Rd2 37.h4 Ke7 38.Bf4 Rb2 39.Be5 Rd2 40.Bf4 
1/2-1/2
