This week's featured article
| The syringe is a glider-to-Herschel converter composed of an eater 1, a block, a beehive with tail, and a large welded still life that combines an eater 2 and an eater 5. It works by converting a bait block into a pi, then hassling the pi into a B-heptomino that restores the bait block over the course of its evolution. The syringe allows much more compactness and timing versatility in signal circuitry than Herschel conduits alone.
The syringe was voted on ConwayLife.com as Pattern of the Year 2015.
In the news
- Entity Valkyrie discovers a new period-13 FNG suppression mechanism, allowing the true period-52 glider gun to be reduced to less than a seventh of its previous size.
- A working 0E0P metacell is announced by Adam P. Goucher, along with several improvements to slmake, the program used to compile the metacell.
- An update to apgsearch sets another new record by finding a 16x16 methuselah with a lifespan of 42,100 ticks.
- A self-constructing "loopship", a new type of spaceship with a non-Geminoid design, is completed by Dave Greene.
- A periodic (p5 or p4) quinti-Snark is constructed by Tanner Jacobi, with the usual implications for reductions to the glider gun collection.
- apgluxe v4.56-ll2.0.5 and Catagolue add support for BSFKL rules.
- A record-setting 39,693-tick methuselah, Wilma, is discovered by Rob Liston using a custom FPGA soup searcher.
- An new LWSS synthesis by Chris Cain allows for LWSS, MWSS, and HWSS guns with pseudo periods as low as 18. 18 is the minimum for HWSS streams.
| The LifeWiki contains one of the most comprehensive catalogues of patterns available on the internet. Within it you will find:
Did you know...
- ... that 24 ten-cell patterns exhibit infinite growth, with 17 unique pattern types, but that it has been proven that no nine-cell pattern exhibits infinite growth?
- ... that all still lifes up to 18 bits have a known glider synthesis, but it is still not known whether all still lifes are synthesizable?
- ... that the French kiss remained without a glider synthesis until 2013?
- ... that Adam P. Goucher's distributed Catagolue soup-search project, started in February 2015, has already tested more random soups than any previous such project, and has contributed to the reduction of many glider construction recipes?
- ... that with the appearance of the 0E0P metacell, the number of periods for which strict volatility 1 oscillators were known went from 12 to infinity?
- ... that Copperhead is not only the first c/10 orthogonal spaceship ever found, but also remarkably compact for a pattern not discovered until 2016?
- ... that loafer is the fifth smallest non-flotilla spaceship, but was discovered 43 years after the four spaceships smaller than it?
- ... that despite being the fourth smallest non-flotilla orthogonal spaceship, loafer has never appeared from a single randomly generated soup?
- ... that all known glider eaters take at least four ticks to recover to their original state after eating a glider?
- ... that the smallest 31c/240 spaceship does not make use of the 31c/240 reaction?