[Site "masterchessopen.com Bad Oeynhausen (Germany)"] [Round "4"] [White "Niephaus Walter (GER)"] [Black "Buchholz Werner"] [Result "1-0"] [ECO "B90"] [Opening "Sicilian: Najdorf"] 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 Nbd7 7.Be2 b5 8.a3 Bb7 9.f3 e6 10.O-O Be7 11.Kh1 O-O 12.Qe1 Rc8 13.Rd1 Qc7 14.Bd3 Ne5 15.Bc1 d5 16.f4 Nxd3 17.cxd3 Qb6 18.e5 Nd7 19.Nce2 a5 20.Be3 Qa6 21.Bd2 Ra8 22.f5 Nxe5 23.Qg3 Bd6 24.Bf4 f6 25.fxe6 Kh8 26.Nf5 g5 27.h4 Bc8 28.Ned4 Qb7 29.hxg5 Rg8 30.Nxd6 {#r} 1-0