411 REFERENCE · Wikibooks
Chess Opening Theory/1. d4/1...d5/2. c4/2...c6/3. Nc3/3...Nf6/4. Nf3/4...e6/5. Bg5/5...dxc4/6. e4/6...b5/7. e5/7...h6/8. Bh4/8...g5
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Botvinnik variation D44 Botvinnik variation
8...g5
Black blocks the vision of White's dark-squared bishop in order to save the knight. It seems that White's attack is finally over but /9. Nxg5/ continues the attack, temporarily sacrificing the knight for two pawns to win it back later.
Theory table
all 9. Nxg5 hxg5 10. Bxg5
References
See also