[Event "Amsterdam"] [Site "?"] [Round "0"] [White "Van Scheltinga"] [Black "Van der Berg"] [Result "1-0"] [ECO "E60"] [Opening "King's Indian: 3.g3"] 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7 7. O-O e5 8. e4 c6 9. h3 exd4 10. Nxd4 a5 11. Be3 Nb6 12. b3 a4 {Black intends to open the a-file and exchange a pair of Rooks - always a good policy in a cramped position} 13. Qc2 axb3 14. axb3 Rxa1 15. Rxa1 Nfd7 16. Rd1 {There is nothing to be done on the a-file, so White comes back to the half-open d-file, where the backward pawn is a welcome target} 16... Qf6 (16... Nc5 $2 17. Nxc6 bxc6 18. Bxc5 {pin tactic}) 17. Nde2 Nc5 18. b4 $1 {In the thick of the fight, White starts a minority attack - the ultimate aim of which is to produce a majority attack!} (18. e5 Qxe5 19. Bf4 Qf6 20. Bxd6 Bf5 21. Qc1 Nd3 { tactical point against Pe5}) 18... Ncd7 19. c5 dxc5 20. bxc5 Na8 (20... Nc4 21. Bd4 Qe7 22. Bxg7 Kxg7 23. Na4 Nce5 24. f4 {trapped Knight}) 21. Bd4 Qe7 22. Bxg7 Kxg7 23. Na4 {The result of the minority attack is that the Black Queenside is cripple, the d-file is fully open, and that the White Kingside maority now becomes an important factor} 23... Nc7 24. Nd4 Re8 25. Nb3 { Before White can mobilize his Kingside majority he must thoroughly protect his vulnerbale minority pawnonc5} 25... Nf8 26. f4 Rd8 27. Qc3+ Kg8 28. Rxd8 Qxd8 29. Qd4 Qxd4+ 30. Nxd4 Nb5 $2 {After this White assume decisive advantage} ( 30... Be6 31. Nxe6 Nfxe6 32. Bf1 Kf8 {Black can hold}) 31. Nb3 Be6 32. Na5 Nd7 (32... Bc8 33. Nb6 {removing the guard}) 33. e5 Nd4 34. Nxb7 f6 35. exf6 Nxf6 36. Na5 Nd7 37. Nxc6 Nb3 38. Nd8 Nbxc5 39. Nxc5 Nxc5 40. Nxe6 Nxe6 41. Bd5 Kf7 42. Kf2 Kf6 43. Bxe6 Kxe6 44. Kf3 Kd5 45. Ke3 h6 46. Kd3 1-0