TMBR: June 2026
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This edition of TMBR is in progress and has not yet been released. Please add any notes you think may be relevant (including in the form a of a TODO with a link to any relevant Discord discussion).
BB Adjacent
- Busy Beaver for Lambda Calculus: TODO: BBλ(39) solved
Holdouts
- BB(6)
- mxdys solved four TMs with FAR.[1][2][3][4]
- prurq solved another four TMs with FAR.[5][6][7]
- A TM was shown to be non-halting by hipparcos, which was later confirmed in Rocq by mxdys.
- BB(2,6)
- Andrew Ducharme reduced the number of holdouts from 413,513 to 412,086, a 0.35% reduction.[8]
- BB(2,7)
- Terry Ligocki enumerated 90K more subtasks, increasing the number of holdouts to 1,365,555,784. A total of 440K subtasks out of the 1 million subtasks (or 44%) have been enumerated.