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  19. a4c3  19... a8b6  20. c2d2  20... c8b7 Not the only way to play it. 21. d2h6 White's play is somewhat easier as he is obviously going to  attack on the kingside due to the weakened dark squares there. 21... f8d8  22. f3g5  22... d7f8  23. f2f4 