Both players have entered QID waters, with somewhat unusual placement of the white pieces.
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 