1RB2RA3LB---2LB_2LA0LA4RB0RB1LA

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Revision as of 22:54, 13 September 2026 by Yves30. (talk | contribs) (Update of the value given for the probability of surpassing the BB(2,5) champion. It isn’t a single value anymore (1/8) but a range of values (25-50%) based on a range of probability of halting per overflow (0.2-0.35), 3 nonhalting overflows being required to beat the champion.)
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1RB2RA3LB---2LB_2LA0LA4RB0RB1LA (bbch) appears to be a tetrational BB(2,5) probviously halting Cryptid. It’s an overflow counter that has some probability of halting per overflow. Racheline estimates this probability between 0.2 and 0.35. Since 3 nonhalting overflows are required for surpassing the current champion (1RB3LA4RB0RB2LA_1LB2LA3LA1RA1RZ (bbch)), the probability of beating this champion is estimated between 25 and 50%.

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