Donaldson, John vs Blocker, Calvin
E Detroit Motor City Open · Round 1 · 1983.01.01 · 1/2-1/2 · A07 King's Indian Attack
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PGN
[Event "E Detroit Motor City Open"] [Site "E Detroit Motor City op"] [Date "1983.01.01"] [Round "1"] [White "Donaldson, John"] [Black "Blocker, Calvin"] [Result "1/2-1/2"] [PlyCount "109"] [WhiteElo "2405"] [WhiteFideId "2000709"] [WhiteTitle "IM"] [BlackElo "2410"] [BlackFideId "2000920"] [BlackTitle "IM"] [ECO "A07"] [Source "MillionBase2.9"] [SourceQuality "4"] [ImportDate "2026-01-06"] 1. Nf3 Nf6 2. g3 d5 3. Bg2 Bf5 4. O-O e6 5. d3 Be7 6. Nbd2 h6 7. c4 c6 8. b3 O-O 9. Bb2 Bh7 10. Qc2 c5 11. Rac1 Nc6 12. cxd5 Nxd5 13. Qb1 b6 14. Qa1 Bf6 15. Bxf6 Qxf6 16. Qxf6 gxf6 17. a3 Rac8 18. Rc4 Na5 19. Rc2 Nb7 20. Rfc1 Rcd8 21. Ne4 Bxe4 22. dxe4 Ne7 23. e5 fxe5 24. Nxe5 Na5 25. Rb1 f6 26. b4 fxe5 27. bxa5 Rd6 28. axb6 axb6 29. Rcb2 Rfd8 30. Rxb6 Rxb6 31. Rxb6 Rd1+ 32. Bf1 Kf7 33. e4 c4 34. Rb4 c3 35. Rc4 Rc1 36. Kg2 Ke8 37. Rc5 Kd7 38. Bb5+ Kd8 39. a4 Nc8 40. Rxe5 Nd6 41. Rxe6 Rd1 42. e5 Nxb5 43. Rc6 Nd4 44. Rxc3 Ke7 45. a5 Ra1 46. Rc4 Nf5 47. Rc5 Ke6 48. f4 h5 49. Kh3 Nd4 50. Kh4 Ra2 51. Kxh5 Rxh2+ 52. Kg5 Rh8 53. Rc3 Rg8+ 54. Kh4 Kf5 55. Kh3 1/2-1/2