The Grunfeld Indian is an active and dynamic reply to 1.d4 which can lead to complex and extremely sharp positions. So it’s no wonder that GM Alexei Shirov has included this opening.
My Best Games in the Grunfeld - Alexei Shirov
The Gruenfeld Defence enjoys a special star status in the family of Indian openings. It involves a daring, active concept: fighting for control of the centre with an early d7-d5 thrust supported only by pieces.
Gruenfeld Defence - Lubomir Ftacnik
The Grünfeld is a highly dynamic opening in which Black’s position often seems to hang together by a single thread; and yet, this apparently precarious equilibrium appears to be enough to make it entirely viable - up to the highest level.
Winning Against the Grunfeld - Mihail Marin
If you want to know an opening, you should understand its typical positional ideas and plans. It is also good to remember variations. But this is not enough. You should also know the typical tactical motifs or your opening. This trio of strategy, variations, and tactics forms a conscious and subconscious image in the mind and helps you to find the right moves. The Grünfeld Defense is an active opening, which often leads to sharp, double-edged play, and tense tactical fights. Therefore the tactical part of the Grünfeld-image is extremely important and should be steadily developed. The most effective, timeproven way to develop tactical abilities, imagination, and the ability to calculate variations, is practice. Poets say, “No day without a line”, aspiring chessplayers should say “No day without tactical exercise”.
Tactic Toolbox Grunfeld - Michal Krasenkow
The King’s Indian and Grunfeld are notoriously tricky and theoretical openings. The Fianchetto variation avoids the main lines which Black players enjoy, and goes for a small but safe edge. Many people fear playing against the King’s Indian because of Black’s ability to attack the White King, but in the Fianchetto variation it is very hard for Black to generate any attacking chances, instead play is often positional, with White having slightly more space for his or her pieces. In this DVD, the author has gone a long way to finding the best lines for White to gain an advantage against Black’s various responses.
Solid and Safe Against the Wild Indians - Play the Fianchetto - Nicholas Pert