Nepomniachtchi is in an adventurous mood as well.
1. e2e4  1... e7e5  2. f1c4  2... g8f6  3. d2d3  3... f8c5  4. b1c3  4... d7d6  5. f2f4 Back to Romanticism. 5... b8c6  6. g1f3  6... f6g4 A very risky choice by the former world champion.  Three other moves are more common.