411 REFERENCE · Wikibooks
Chess Opening Theory/1. d4/1...Nf6/2. c4/2...g6/3. Nc3/3...d5/4. cxd5/4...Nxd5/5. e4/5...Nxc3/6. bxc3
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Grünfeld Defence
6. bxc3
With this forced recapture White strengthens their center, but their queenside is weak.
Theory table
6. ... Bg7 7. Nf3 c5 6. ... ... 7. Bc4 c5