TMBR: Sep 2025

[Shawn Ligocki]

TMBR (This Month in Beaver Research, "timber") for September 2025 is now available:

https://wiki.bbchallenge.org/wiki/TMBR:_September_2025

This month, our long-awaited BB(5) preprint "Determination of the fifth Busy Beaver value" was released on arXiv. We saw continued public attention with Ben Brubaker's BB(6) Quanta article reprinted in Wired. There were massive holdout reductions across 4 Busy Beaver domains with BB(2,6) seeing over a 96% reduction in holdouts! And the Bug Game was introduced and computed for small values. October will be BB(3,3) month.