[Event "Ch BRD (corr.)"] [Site "masterchessopen.com BRD"] [Round "0"] [White "Keller Hanno (GER)"] [Black "Koch Berthold (GDR)"] [Result "1-0"] [WhiteElo "2031"] [ECO "A05"] [Opening "Reti: 1...Nf6"] 1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d6 6.d4 Nbd7 7.Nc3 e5 8.e4 c6 9.Rb1 a6 10.Qc2 b5 11.Rd1 Qe7 12.b3 Bb7 13.c5 Ne8 14.cxd6 Nxd6 15.dxe5 Nxe5 16.Nxe5 Bxe5 17.Ba3 Rfd8 18.f4 Bxc3 19.Qxc3 Nxe4 20.Bxe7 Nxc3 21.Bxd8 Nxb1 22.Ba5 Na3 23.Rd7 {#r} 1-0