[Event "It"] [Site "masterchessopen.com Hungary"] [Round "0"] [White "Portisch Ferenc (HUN)"] [Black "Lengyel"] [Result "1/2-1/2"] [WhiteElo "2342"] [ECO "E41"] [Opening "Nimzo-Indian: 4.e3 c5 5.Bd3"] 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 O-O 6.Nf3 d5 7.O-O dxc4 8.Bxc4 Nc6 9.a3 Ba5 10.Bd3 cxd4 11.exd4 h6 12.h3 Bb6 13.Be3 Ne7 14.Bc2 Ned5 15.Nxd5 Qxd5 16.Qd3 Qf5 17.Qb3 Qd5 18.Qd3 Qf5 19.Qb3 Qd5 20.Qd3 {#d} 1/2-1/2