1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... d7d5  4. c4d5  4... e6d5  5. c1g5  5... c7c6  6. d1c2 The famous Carlsbad pawn structure has been reached, named after the current town Karlovy Vary in the Czech Republic. 6... h7h6 A modern treatment of the position. 7. g5h4  7... c8e6  8. e2e3  8... b8d7  9. f2f3 A flexible idea that can be attributed to Botvinnik. The great champion liked to play aggressively in the center in this system, rather than following the routine path of the minority attack. 9... f8d6  10. f1d3  10... c6c5 Tabatabaei modifies the pawn structure, using the drawback of the f2-f3 advance. Since the capture on c5 is not desirable for White at the moment (e3-pawn being exposed) So has to concede some queenside space to his opponent. 11. g1e2  11... c5c4  12. d3f5  12... e8g8  13. e1g1  13... d8e8  14. f5e6  14... f7e6 The first moment about which one can argue. The black king is getting exposed in the long run. Still, this is not yet relevant, at least for the foreseeable future. 15. a2a4 A novelty that intends to keep the black pawns separated. So hopes to swap his b-pawn for his opponent’s c4-one, thus exposing a potential weakness on the b-file. 15... a7a6  16. b2b3 