The Catalan Opening is characterised by the moves 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2, although it is common to transpose into it from other lines.
Popular in the 1930′s and 1940′s, Vladimir Kramnik has been instrumental in restoring its popularity.
It was named after Savielly Tartakower used it in the 1929 Barcelona tournament, after being asked to create a new variation in homage to the region’s chess history.
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