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Chittka,Julius vs Ondersteijn,N

2026.04.06 · game 1

White to move

PGN

[Event "grenke Chess Open 2026"]
[Site "Karlsruhe GER"]
[Date "2026.04.06"]
[Round "9.54"]
[White "Chittka,Julius"]
[Black "Ondersteijn,N"]
[Result "0-1"]
[WhiteTitle "FM"]
[BlackTitle "IM"]
[WhiteElo "2279"]
[BlackElo "2367"]
[ECO "E11"]
[Opening "Bogo-Indian defence, Gruenfeld variation"]
[WhiteFideId "12954772"]
[BlackFideId "1011162"]
[EventDate "2026.04.02"]

1. d4 Nf6 2. Nf3 e6 3. c4 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Bxd2 Bb7 7. Bg5 h6 8.
Bh4 d6 9. e3 g5 10. Bg3 Ne4 11. Nd2 Nxg3 12. hxg3 a5 13. Qc2 Nd7 14. Ne4 Qe7 15.
O-O-O e5 16. Nc3 Nf6 17. f3 e4 18. f4 g4 19. Be2 h5 20. d5 Kf8 21. Nb5 Bc8 22.
Qc3 Bd7 23. Nd4 a4 24. Rh4 Ra5 25. Kd2 Qd8 26. Ke1 Ke7 27. Kf2 Rh6 28. Ra1 Qh8
29. Bd1 Ne8 30. Bc2 f5 31. Qb4 Nf6 32. Ne2 Kf7 33. Qd2 Rc5 34. b3 axb3 35. Bxb3
Nxd5 36. Nd4 Ne7 37. Ba2 Kg6 38. Rhh1 h4 39. Ne2 h3 40. gxh3 Rxh3 41. Rxh3 Qxh3
42. Rg1 Qh2+ 43. Rg2 Qh8 44. Nd4 Ra5 45. Qc1 c5 46. Ne2 Be6 47. Rg1 b5 48. Qd2
Rxa3 49. Qxd6 Qf6 50. Bb1 Bxc4 51. Qxc5 Qb2 52. Re1 Kf7 53. Bc2 Ra2 54. Bd1 Qh8
55. Kg1 Qh3 56. Rf1 Rxe2 57. Bxe2 Qxg3+ 0-1

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