FEN
[Event "Kampioenschap van Amsterdam 1926"]
[Site "https://lidraughts.org/x3CY9Nb5"]
[Date "1926.01.01"]
[Round "1"]
[White "de Jongh, Herman"]
[Black "van der Sleen, Otto Jan Bernardus"]
[Result "2-0"]
[WhiteElo "?"]
[BlackElo "?"]
[GameType "20"]
[TimeControl "-"]
[Opening "?"]
[Termination "Normal"]
[Annotator "lidraughts.org"]
1. 33-28 17-21 2. 39-33 21-26 3. 31-27 19-23 4. 28x19 14x23 5. 44-39 11-17 6. 50-44 17-21 7. 33-28 9-14 8. 28x19 14x23 9. 39-33 10-14 10. 34-30 14-19 11. 33-28 7-11 12. 43-39 20-24 13. 30-25 5-10 14. 40-34 10-14 15. 34-30 4-9 16. 39-33 12-17 17. 37-31 26x37 18. 42x31 21-26 19. 47-42 26x37 20. 42x31 2-7 21. 49-43 7-12 22. 44-39 17-22 23. 28x17 11x22 24. 41-37 1-7 25. 46-41 14-20 26. 25x14 9x20 27. 48-42 20-25 28. 39-34 15-20 29. 31-26 22x31 30. 36x27 3-9? {(-0.28 → 0.88) Mistake. Best move was 6-11.} (30... 6-11 31. 41-36 11-17 32. 27-21 16x27 33. 32x21 17-22 34. 21-16 7-11 35. 16x7 12x1 36. 37-32 22-27 37. 32x21) 31. 41-36 9-14 32. 33-29 24x33 33. 38x29 7-11 34. 42-38 11-17? {(0.93 → 1.76) Mistake. Best move was 23-28.} (34... 23-28 35. 32x23 19x28 36. 38-32 13-19 37. 32x23 19x28 38. 37-31 28-33 39. 29x38 18-23 40. 27-22 11-17 41. 22x11) 35. 37-31 17-22 36. 43-39 22-28 37. 38-33 28x37 38. 31x42 12-17?? {(1.73 → 4.17) Blunder. Best move was 20-24.} (38... 20-24 39. 29x9 13x4 40. 42-38 8-13 41. 45-40 4-9 42. 33-29 12-17 43. 38-32 9-14 44. 39-33 17-22 45. 29-24) 39. 42-38 17-22?! {(3.71 → 4.66) Inaccuracy. Best move was 18-22.} (39... 18-22 40. 27x9 14x3 41. 29x18 3-9 42. 33-29 19-23 43. 30-24 23x12 44. 24x15 9-14 45. 29-24 8-13 46. 38-32) 40. 38-32 22x31 41. 36x27 8-12? {(4.01 → 8.36) Mistake. Best move was 6-11.} (41... 6-11 42. 32-28 23x21 43. 26x6 19-23 44. 6-1 8-12 45. 1-6 14-19 46. 30-24 19x30 47. 35x15 25-30 48. 34x25) 42. 33-28 12-17 43. 30-24 19x30 44. 28x8 18-23?! {(13.04 → Win in 14) Win is now unavoidable. Best move was 17-22.} (44... 17-22 45. 35x15 22x31 46. 26x37 16-21 47. 29-24 18-23 48. 24-20 14-19 49. 20-14 19x10 50. 15x4 23-29 51. 34x23) 45. 35x15 17-22 46. 27x18 23x3 47. 29-24 6-11 48. 32-27 {Black resigns.} 2-0