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 