[Event "Ch Region (seniors)"] [Site "masterchessopen.com - Ruhrgebiet (Germany)"] [Round "9"] [White "Petersen Hans Christian"] [Black "Arendt Heinz"] [Result "0-1"] [BlackElo "1935"] [ECO "A18"] [Opening "English: Mikenas, Flohr Variation"] 1.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5 Nfd7 5.d4 dxc4 6.Bxc4 Nb6 7.Bd3 Nc6 8.Nf3 Nb4 9.a3 Nxd3+ 10.Qxd3 Be7 11.Be3 Nd5 12.O-O O-O 13.Rfe1 b6 14.b4 Bb7 15.Rac1 a5 16.Nxd5 Bxd5 17.Qc3 axb4 18.Qxc7 bxa3 19.Qxd8 Rfxd8 20.Bd2 b5 21.Rc7 Re8 22.Rec1 b4 23.Ra1 b3 24.Bc3 b2 25.Bxb2 axb2 {#R} 0-1