5960: Super tricky endgame!

This is a mail game, which means two almost certainly very good players had all the time they needed to figure out the moves. Yet still white didn’t get the win. Here’s the best play as picked from Kingsrow.

[Event “”]
[Date “”]
[Black “”]
[White “”]
[Result “*”]
[Setup “1”]
[FEN “W:WK15,18,21,22,28:B4,13,20,K23”]

  1. 18-14 23-18 2. 15-19 18x9 3. 21-17 9-6 4. 17-14 6-1 5. 14-10 1-5 6. 19-23 5-9 7. 23-18
    9-5 8. 10-7 5-9 9. 7-3 9-6 10. 18-23 6-10 11. 23-27 10-14 12. 28-24 14-10 13. 24-19 10-14
  2. 19-16 14-10 15. 16-11 10-14 16. 3-7 14-9 17. 7-10 9-5 18. 10-14 5-1 19. 11-7 1-6 20.
    7-2 6-1 21. 14-18 1-5 22. 2-6 5-9 23. 6-10 9-5 24. 10-14 5-1 25. 14-9 1-5 26. 27-23 5x14 27.
    18x9 20-24 28. 9-14 4-8 29. 14-18 24-28 30. 18-14 28-32 31. 22-18 8-11 32. 23-19 32-28 33.
    14-10 13-17 34. 10-15 17-22 35. 15x8 22-26 36. 18-14 26-31 37. 8-12 31-26 38. 14-10 28-32
  3. 12-16 32-27 40. 16-20 26-22 41. 10-7 22-17 42. 7-2 27-32 43. 19-15 17-21 44. 15-18
    21-25 45. 2-6 25-29 46. 18-23 32-28 47. 6-10 29-25 48. 23-26 25-29 49. 10-15 29-25 50.
    15-18 25-21 51. 26-30 28-32 52. 20-24 21-17 53. 24-28 17-13 54. 18-14 32-27 55. 30-26
    27-32 56. 26-23 13-17 57. 14x21 32-27 58. 23x32 *