[Event "Science Park Open A 2023"] [Site "Amsterdam NED"] [Date "2023.07.18"] [Round "4.4"] [White "Blees, A"] [Black "Eefting, Martijn"] [Result "1-0"] [WhiteTitle "IM"] [WhiteElo "2319"] [BlackElo "1865"] [ECO "E16"] [Opening "Queen's Indian"] [Variation "Yates variation"] [EventDate "2023.07.15"] [WhiteFideId "1000217"] [BlackFideId "445126"] 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 a5 5. g3 b6 6. Bg2 Bb7 7. O-O O-O 8. Bf4 Be7 9. Nc3 Ne4 10. Qc2 Nxc3 11. Qxc3 d6 12. Qd3 f5 13. Ne1 Bxg2 14. Nxg2 Nc6 15. Bd2 e5 16. d5 e4 17. Qc2 Ne5 18. Nf4 Qd7 19. f3 exf3 20. exf3 Rfe8 21. Ne6 Bf6 22. Rae1 Rxe6 23. dxe6 Qxe6 24. b3 Qf7 25. Qxf5 Nxc4 26. Qc2 Bd4+ 27. Kg2 Nxd2 28. Qxd2 Bc5 29. Re4 d5 30. Re5 Rd8 31. Qd3 Bb4 32. Rf2 g6 33. h4 Kg7 34. Rfe2 Qd7 35. h5 Qf7 36. Qd4 Bc5 37. h6+ Kg8 38. Re8+ Rxe8 39. Rxe8+ Bf8 40. Rd8 c5 41. Qe5 d4 42. Kf2 a4 43. f4 axb3 44. axb3 g5 45. Qxg5+ Kh8 46. Qe5+ Kg8 47. g4 Qg6 48. Qd5+ Qf7 49. Qd6 b5 50. f5 c4 51. bxc4 bxc4 52. Qe6 1-0