context: 1. e2e4  1... c7c6  2. g1f3  2... d7d5  3. b1c3 The Two Knights Variation is a good choice for White in the Caro-Kann, ideal for someone who likes to play with the bishops, since in the main line Black quickly exchanges the light-squared bishop for a knight. This reason is probably why it was one of the favorite lines of Bobby Fischer; the American genius had a well-documented preference for positions with a bishop against a knight. 3... c8g4  4. h2h3  4... g4f3  5. d1f3  5... e7e6  6. f1e2 The most popular move nowadays. Interestingly, Keymer is quite used to playing this position as Black, having last played it in an important Olympiad game last year. 6... g8f6  7. e1g1  7... d5d4 It's often said that knights prefer closed positions. If we look at it from that perspective, this move makes a lot of sense, especially since it gains time by threatening the white knight. Fortunately, things in chess are more complicated than that, which is why it's so fascinating. 8. c3b1  8... f8d6  9. c2c3 A rare move. 9... c6c5  10. c3d4  10... c5d4 