[Event "20e HSG Open"] [Site "Hilversum"] [Date "2026.06.21"] [Round "6"] [White "Vaillant, Paul"] [Black "Koks, Paul"] [Result "1/2-1/2"] [ECO "A00"] [PlyCount "98"] [EventDate "2026.06.21"] [EventRounds "6"] [EventCountry "NED"] [SourceVersionDate "2025.09.06"] 1. c3 d5 2. d3 Nf6 3. f3 e5 4. e4 Bc5 5. g3 O-O 6. Bh3 Nbd7 7. b4 Be7 8. Qb3 c6 9. Be3 Nb6 10. Bxc8 Rxc8 11. Nh3 dxe4 12. dxe4 Qd3 13. Kf2 Nc4 14. Re1 Rcd8 15. Na3 Nxe3 16. Rxe3 Qd2+ 17. Re2 Qh6 18. Kg2 Rd2 19. Rxd2 Qxd2+ 20. Nf2 Qe2 21. Rd1 Rd8 22. Rxd8+ Bxd8 23. Qc2 Qxc2 24. Nxc2 b5 25. Nd3 Nd7 26. f4 Bc7 27. f5 a5 28. Kf3 Kf8 29. bxa5 Bxa5 30. Ncb4 c5 31. Na6 c4 32. Ndb4 Bxb4 33. cxb4 Nb6 34. Nc7 Ke7 35. Nxb5 Kd7 36. Nc3 Kc6 37. a4 Nd7 38. Ke3 Nf6 39. Kf3 g6 40. g4 h6 41. h3 Ne8 42. fxg6 fxg6 43. h4 Nc7 44. g5 hxg5 45. hxg5 Ne6 46. Kg4 Nf4 47. Kf3 Ne6 48. Kg4 Nf4 49. Kf3 Ne6 1/2-1/2