This is absolutely forced.
1. g1f3  1... d7d5  2. g2g3  2... c7c5  3. f1g2  3... b8c6  4. d2d4  4... g8f6  5. e1g1  5... e7e6  6. c2c4  6... d5c4  7. d4c5  7... d8d1  8. f1d1  8... f8c5  9. b1d2 Interestingly, yesterday's Game of the Day also featured this position. Arjun, however, played the solid 9...c3. 9... b7b5 A more or less fresh idea, played in ten games, much less than the number of games played in the main line. But Harikrishna hardly failed to notice in his preparation that Warmerdam had played this before. Actually, Harikrishna himself has played this position with White. 10. a2a4 This move is played in most games. This is understandable, since after 10.Ne5 (the engine's first choice), Black has compensation, at least to human eyes. 10... c8a6  11. f3g5 Harikrishn follows his previous experience.