1RB3RB1LB---2RB 2LA1RA4LB2LA2RA: Difference between revisions

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== Review ==
== Review ==
Matthew House (@LegionMammal978'')'' reviewed the above analysis on [https://discord.com/channels/960643023006490684/1084047886494470185/1251210996224364766 June 14th 2024] and agrees with it.
Matthew House (@LegionMammal978) reviewed the above analysis on [https://discord.com/channels/960643023006490684/1084047886494470185/1251210996224364766 June 14th 2024] and agrees with it.
 
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Revision as of 02:08, 24 July 2024

https://bbchallenge.org/1RB3RB1LB---2RB_2LA1RA4LB2LA2RA is a 2-state 5-symbol machine whose behavior is suspected to be similar to Skelet 17.

Analysis shared by Daniel Yuan (@dyuan01) on Discord, on June 14th 2024:

I just checked whenever the beaver reaches the 1 on the left side, and calculated the tape for when it next reaches the left side. It would be nice if someone can verify these rules.

[x, y, z] := 1 <B 4^x 12 4^y 12 4^z

[0, a, b, …] -> [a+3, b, …]
[2n+1, 2a, 2b, …, 0] -> Halt 
[2n+1, 2a, 2b, …, 2m+2] -> [2n, 2a, 2b, …, 2m+2, 0]
[2n+1, 2a, 2b, …, 2m+1] -> [2n, 2a, 2b, …, 2m+1, 1]
[2n+1, 2a, 2b, …, 2m+1, x, …] -> [2n, 2a, 2b, …, 2m+1, x+1, …]
[2n+2, a, b, …] -> [2n+1, a+1, b, …]

And you should start at [1, 1]

Review

Matthew House (@LegionMammal978) reviewed the above analysis on June 14th 2024 and agrees with it.