1. g1f3  1... d7d5  2. e2e3  2... g8f6  3. c2c4  3... e7e6  4. b2b3  4... f8d6  5. c1b2 The Reti is a chameleon opening and as such, the arising positions often represent familiar defenses with reversed colors and an extra tempo for White. 5... e8g8  6. b1c3  6... f8e8  7. c3b5  7... d6e7  8. b2e5  8... b8a6  9. c4d5  9... e6d5 Both players have entered QID waters, with somewhat unusual placement of the white pieces. 10. f1e2 This is already a novelty, although such an obvious and natural move can hardly be considered new in any situation. 10... c7c6  11. b5d4  11... a6c5 The position is pretty locked; therefore, both players start to maneuver, slowly shifting their pieces for the flanks where they have an advantage. 12. h2h3  12... a7a5  13. d1c2  13... e7d6 The trade of a pair of bishops should be favorable for the second player. 14. e5d6  14... d8d6  15. e1g1  15... c5e6 The knight has also been shifted to a more central spot. 16. d4f5  16... d6d8  17. f1c1  17... e6f4 [%c_effect f4;square;f4;type;GreatFind;persistent;true] Thanks to this little trick, Vidit manages to trade another light piece. Black does not have any problems at all. 18. e2f1  18... c8f5  19. c2f5  19... f4e6 