1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... d7d5  4. c4d5  4... e6d5  5. c1g5 World championship matches give a popularity boost to the lines that were explored there. 5... c7c6  6. e2e3  6... h7h6  7. g5h4  7... f8e7  8. f1d3  8... e8g8  9. d1c2  9... f8e8 The Carlsbad pawn structure has been reached, one of the most solid setups. 10. g1e2  10... a7a5 A useful, and flexible move. 11. h2h3  11... b8a6 [%c_effect a6;square;a6;type;Interesting;persistent;true] Another flexible developing move. The knight is ready to proceed to the e6-square, whenever needed. 12. a2a3  12... f6e4  13. h4e7  13... d8e7  14. d3e4  14... d5e4  15. d4d5 An impulsive move. 15... a6c5 [%c_effect c5;square;c5;type;GreatFind;persistent;true] This is the thing. Raunak allowed this maneuver. 16. e1g1  16... c5d3 Esipenko would not miss a chance to install his knight to a beautiful outpost. Black does not experience any problems. 17. e2g3 