[Event "Cup Hofmann "] [Site "masterchessopen.com Baden (Germany)"] [Round "4"] [White "Korchnoi Viktor (SUI)"] [Black "Knaak Rainer (GER)"] [Result "1-0"] [WhiteElo "2635"] [BlackElo "2540"] [ECO "A53"] [Opening "Old Indian: 3.Nc3 Nbd7 4.Nf3"] 1.d4 Nf6 2.c4 d6 3.Nc3 Nbd7 4.Nf3 g6 5.g3 Bg7 6.Bg2 O-O 7.O-O e5 8.Rb1 Re8 9.b4 exd4 10.Nxd4 a6 11.Qb3 c5 12.Nc2 cxb4 13.Qxb4 Nc5 14.Ne3 Be6 15.Rd1 Qc7 16.Bb2 Rac8 17.Ba1 Qe7 18.Rb2 Bh6 19.Ncd5 Bxd5 20.Nxd5 Nxd5 21.Bxd5 Bg7 22.Rbd2 Bxa1 23.Rxa1 Ne4 {#r} 1-0