Catalan, Closed, 5.Nf3 Notation: 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3
In each game under Location you see masterchessopen.com but it's not a valid website, so please don't use it. Claus Gamborg, Jan. 2023