Not a very practical choice according to White.  Giri was down to three minutes on his clock and could not adjust to the  changing situation.
1. c2c4  1... e7e5  2. b1c3  2... g8f6  3. g1f3  3... b8c6  4. e2e3  4... f8b4 The reversed Rossolimo. 5. d1c2  5... b4c3  6. c2c3  6... d8e7  7. d2d4 This is the major trend nowadays. 7... f6e4  8. c3d3  8... e5d4  9. f3d4  9... e4c5  10. d3d1  10... c6d4  11. d1d4 \"This was all  pretty normal,\" said Lupulescu who was still in his prep. 11... e8g8  12. f1e2 White is in a hurry to develop his kingside. 12... b7b6  13. e1g1  13... c8b7 The opening is almost over. White has the bishop pair,  however he has serious difficulties in deploying it. 14. f2f3  Blunting both black minor pieces at once. The drawback of the move is that the e3-pawn is also weakened. 14... a7a5 Giri establishes a blockade. From here on the impression is  that Black has all the play. 15. c1d2  15... f7f5 Black not only fixes the e-pawn, he is ready to lift his rooks for a kingside attack. 16. a1d1  16... d7d6  17. b2b3  17... a8e8  18. f1f2 Correctly covering the second rank. 18... f8f6  19. e2d3 A silent draw offer. Lupulescu sensed the danger. 19... e7f7 Giri rejects the offer. 20. f2e2 This move, however, is an inaccuracy. 20... f7h5  21. d2e1  21... b7e4 \"I somehow totally missed this idea.\" (Lupulescu) This  sudden tactical blow puts a lot of pressure on White. 22. d3b1  22... f6g6  23. e1g3  23... e4b1 Giri spotted that the rook on e2 is once again  vulnerable. 24. d1b1  24... c5e4 And he did it again. Unfortunately for the Dutch GM,  White has a surprising defense. 25. b1e1  25... e4g3  26. d4d5 The only move, but a sufficient one. 26... g8h8  27. h2g3  27... g6g3  28. e3e4 A very important move in White's  counterplay which highlights the weakness of the back rank. 28... h5f3  29. d5f7 \"I think he missed this. I had to see this in advance as  otherwise it was quite bad.\" (Lupulescu) 29... e8g8  30. e4f5 