1. e2e4  1... e7e6  2. d2d4  2... d7d5  3. e4e5  3... c7c5  4. c2c3  4... b8c6  5. g1f3  5... d8b6  6. a2a3  6... c8d7 Berkes had played this line in his World Cup match against Vitiugov. 7. b2b4  7... c5d4  8. c3d4  8... a8c8  9. c1b2 The development of the bishop on e3 is also very popular. 9... g8e7  10. b1c3  10... c6a5  11. f1d3 [%c_effect d3;square;d3;type;Interesting;persistent;true] A new move at the grandmaster level. It certainly was prepared especially for this game. 11... a5c4  12. b2c1  12... a7a5 A critical move to challenge White's opening idea. 13. e1g1 [%c_effect g1;square;g1;type;GreatFind;persistent;true]