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  • $\begingroup$ Are you assuming the genuine coin weight is known upfront? $\endgroup$
    – Kris Van Bael
    Commented Mar 1, 2023 at 7:02
  • $\begingroup$ @KrisVanBael No, but I should indeed have mentioned it, now added. $\endgroup$
    – Retudin
    Commented Mar 1, 2023 at 8:00
  • $\begingroup$ There's similarities in our strategies. But I think I'm leveraging the sample-size-differences more. I think the problematic case for you, is when first three measurements are equal and suggest a different weight than the 4th. If my calculations are correct, that case can still have 54 different answers. $\endgroup$
    – Kris Van Bael
    Commented Mar 4, 2023 at 22:54
  • $\begingroup$ @KrisVanBael That case is indeed complex, but I think it is doable/I solved it. Your approach seems superior. In your approach however, I think cancelling fakes are a possibility in many more branches. (..and you currently have no full answer published either). $\endgroup$
    – Retudin
    Commented Mar 5, 2023 at 12:05
  • $\begingroup$ I do not intend to document a full answer. That’s a job for a computer. But I’ll be happy work out a specific case that you wish to challenge. $\endgroup$
    – Kris Van Bael
    Commented Mar 5, 2023 at 14:33