The Grünfeld Defence was invented by the famous Austrian Grandmaster Ernst Grünfeld within the early twenties of the final century. Certainly one of the primary reactions to it came from the nice Akiba Rubinstein - the g3 system, fianchettoing the bishop to g2. After that many systems were tried to refute the Grünfeld and nothing actually worked. So, Rubinstein's recipe remains a very important positional method in opposition to this dynamic opening. Rxf7 19.Qa3 - Black is a pawn down and has weakened his king’s position.
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