October 31: ENDWposts a 50c/631254 orthogonal spaceship, which works by storing oncoming glider gun construction arm recipes in two long Herschel loops, each of which alternately lengthens the front end and shortens the back end of the opposing loop.
October 23: ENDWcompletes a builder script for an optimized version 3 of the omniship from September, with a sample spaceship that's (8388608,4194304)c29360128 -- simplified speed (2,1)c/7.
October 16: David Bellconstructs an engineless 3c/7 orthogonal rake, demonstrating that 3c/7 rakes of all periods 770 or greater can be constructed.
October 10: 400spartansposts a population-321 unsynthesizable oscillator with a 275-cell self-forcing patch, a considerable improvement over the previous smallest known unsynthesizable oscillator.
... that no pattern inside a 6 × 6 bounding box is a Garden of Eden?
... that Garden of Eden patterns with only 45 live cells have been found?
... that there are orphans that are 5 cells high, but 4-cell-high orphans are impossible?
... that 6-cell-high Garden of Eden patterns were constructed as far back as 1973, but 5-cell-high GoEs were unknown until Steven Eker found some in 2016?
... that no way is known for a 3 × 3 pattern to be tiled into an M × N rectangle to produce a Garden of Eden, but that there are 4 × 3, 4 × 4 and larger tiles that can be repeated in this way to produce GoEs?
... that there are spaceship stabilizations of agars?
... that block is the only finite strict still life where each living cell has exactly 3 neighbours?
