TMBR: September 2025

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This Month in Beaver Research

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This Month in Beaver Research for September 2025.

Holdouts

• BB(6):
  • Andrew Ducharme and @mxdys both found a family of 10 halting TMs independently, all halting in around $10^{69}$ steps.
  • @mxdys decided yet another machine's fate from the 50 Random Holdouts released in August, making 7/50 machined solved as of this month.
• BB(7): Andrew Ducharme has continued reducing the number of holdouts, from 59,727,905 to 50,268,427 (15.84% reduction)