There seems to be a bug for 20xx cards, nothing is found
For small beaches as well as larger ones it turns without finding anything.
I take as examples the beach mentioned by Zahid888
C:\Users\AlphaT"C:\Users\Documents\bitcoin\RCKangaroo.exe" -dp 16 -range 74 -start 40000000000000000000 -p
ubkey 03726b574f193e374686d8e12bc6e4142adeb06770e0a2856f5e4ad89f66044755
Would it be possible to fix the bug?
For the moment this version does not work for 20xx series cards
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Yes, it's a bug, but not in the software.
You should check parameters, -start 40000000000000000000 is incorrect for puzzle #75, must be -start 4000000000000000000