1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1c4  3... f8c5  4. d2d3  4... g8f6  5. a2a4  5... e8g8  6. a4a5  6... a7a6  7. e1g1  7... h7h6  8. c2c3  8... d7d6  9. h2h3  9... c5a7  10. c1e3  10... c6e7 As a rule,  Black prefers not to trade on e3 as this will open a valuable file for the first player. 11. e3a7  11... a8a7  12. f1e1  12... e7g6  13. b1d2  13... f8e8  14. d3d4  14... c8e6  15. c4f1 White's minimal advantage is due to his extra space and therefore Van Foreest needs more pieces on board. He is  now ready for massive queenside expansion and his bishop will be both  useful while supporting the advance as well as a defender on the kingside.  15... d8c8  16. b2b4  16... e5d4 Also, a dubious decision. 17. c3d4  17... d6d5  18. e4e5  18... f6d7  19. d1c2 Now White has the perfect Carlsbad  structure, with his e3-pawn greatly improved on e5. The move in the game  aims for queenside fixation as well as prevents the possible undermining  of his center with f7-f6. 19... a7a8  20. a1c1  20... c7c6  21. d2b3  21... e8e7  22. g2g3 Van Foreest's next moves are easy to understand. The Dutchman  slowly but surely builds the decisive kingside attack. 22... c8e8  23. f3d2  23... f7f5 The blockade should not help as White has an extra pawn, better  pieces and more space on the kingside. 24. f1d3  24... e8f7  25. d2f1  25... e7e8  26. f1e3  26... g6e7  27. f2f4  27... g7g6  28. e1e2 The extra space translates into doubling rooks on  the potentially opened files.