1. e2e4  1... c7c5  2. g1f3  2... d7d6  3. f1b5  3... b8d7  4. b5a4  4... g8f6  5. e1g1  5... a7a6  6. c2c4  6... g7g6  7. b1c3  7... f8g7  8. h2h3  8... e8g8  9. d2d3  9... a8b8  10. a1b1  10... d8a5 This does not really prepare b7-b5. 11. c1d2  11... a5c7  12. a2a3  12... e7e6  13. b2b4  13... b7b6  14. b4c5  14... b6c5  15. d1c2  15... d7b6  16. a4b3  16... f6d7 Duda is preparing for the queenside battle. 17. c3a4  17... b6a8 A curious idea to leave the white pieces stepping on each  other's toes at the a4-point. 18. d2c3  18... g7c3 