Maybe this move isn't the best, but Vidit defends the e6-pawn and perhaps had an eye on tactical issues if Black's king goes to the queenside.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... f7f5 [%c_effect f5;square;f5;type;Interesting;persistent;true] Another risky opening choice for Praggnanandhaa, just like yesterday. This variation is called the \"Delayed Schliemann,\" and you would expect to find it in online blitz games, where it does occur sometimes, but not in a Candidates Tournament. Playing something so risky with Black demands very good preparation and total confidence in the calculation. Despite the round-two defeat, or perhaps because of it, Praggnanandhaa doesn't seem shaken and plays for a win with Black. 5. d2d4 [%c_effect d4;square;d4;type;GreatFind;persistent;true] This is the best way for White to fight for an advantage. 5... e5d4  6. e4e5  6... b7b5  7. a4b3  7... c6a5 A very rare move. In my database, I found just nine games in this position. 8. f3d4 Caught by surprise, Vidit starts thinking. White has many promising moves, so it's difficult to make a choice. 8... c8b7  9. d4f5 [%c_effect f5;square;f5;type;Inaccuracy;persistent;true] A natural and tempting move, simply capturing a pawn, but not the best. 9... a5b3  10. a2b3  10... d7d6 [%c_effect d6;square;d6;type;GreatFind;persistent;true] A very difficult move to find over the board. According to the computer, Black no longer has any major problems here. I believe this is still preparation. 11. d1e2 The first new move of the game. 11... d8d7 [%c_effect d7;square;d7;type;GreatFind;persistent;true] The same idea. 12. e5e6  12... d7c6  13. c1g5  13... g7g6 [%c_effect g6;square;g6;type;GreatFind;persistent;true] 14. f5e3  14... h7h6  15. g5f4  15... g8e7 [%c_effect e7;square;e7;type;GreatFind;persistent;true] Praggnanandhaa is not in a hurry to capture the e6-pawn. 16. c2c4  16... b5b4 [%c_effect b4;square;b4;type;GreatFind;persistent;true] Taking the c3-square from the knight.