Another obvious move, and as Radjabov will soon prove—an empty threat.
1. g1f3  1... g8f6  2. c2c4  2... e7e6  3. d2d4  3... d7d5  4. b1c3  4... f8b4  5. c4d5  5... e6d5  6. c1f4 A relatively rare choice for the first player. 6... f6e4  7. a1c1  7... c7c6  8. e2e3  8... b8d7  9. f1d3  9... d7f6 All of this seems very logical and now a strange version of the Carlsbad arose. It seems favorable for White, as it is not easy to challenge the white dark-squared bishop which is a common theme in the usual Carlsbad. 10. e1g1 