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@freemo I'm not really understanding this setup. So there's a round table, with 4 boxes on them in cardinal directions, let's say. Each box contains a coin.

5 times the table is spun randomly, you dunno since you're blindfolded. Then when a spin's done, you can open the box closest to you to check the status of the coin. You can decide to put it heads or tails.

So that's 5 times you can do this, no clue if it's the same coin or not since it was random without you being able to observe it.

Then you have to come up with a strategy that guarantees in 5 rounds or less that all 4 coins will be the same facing? Is that another 5 rounds, or is that this one 5 rounds?

Right it can be any 2 coins but you have no idea what coins were which in the roevious round since the table is spun

π Doc Freemo π³π±@freemo@qoto.org@trinsec

There is only a single set of 5 rounds. You can check and flip up to 2 coins each round.