Cthulhu
| Cthulhu | |||||||||
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| Pattern type | Strict still life | ||||||||
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| Number of cells | 45 | ||||||||
| Bounding box | 11 × 13 | ||||||||
| Static symmetry | n | ||||||||
| Discovered by | Adam P. Goucher | ||||||||
| Year of discovery | 2016 | ||||||||
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Cthulhu is a 45-cell still life.
One form of this still life (systematically called trans-Cthulhu) was found in the ash of a random soup by Adam P. Goucher on May 3, 2016,[1] despite being unusually large for a natural still life. BlinkerSpawn found a 15-glider synthesis of Cthulhu on the same day,[2] which Mark Niemiec improved to 12 gliders on May 6, 2016.[3] The synthesis was reduced to 11 gliders in April 2023, after a 4-glider collision producing a stack of three beehives was found.[4]
Cthulhu is one of the largest known still lifes to have occurred naturally, and once the biggest; its title was taken by professor in July 2016, followed by the cloverleaf interchange in August of that year.
As of October 2024, Cthulhu is still tied[5][note 1] for the largest fully asymmetric still life to occur in the final ash of a soup.[note 2]
cis-Cthulhu
| cis-Cthulhu (click above to open LifeViewer) RLE: here Plaintext: here |
The "tentacles" of Cthulhu are made of a sidewalk connected to the main body of the object (mainly comprising of a long³ hat stabilized by two buns). Reflecting the sidewalk produces the cis-version of Cthulhu, shown to the left; Mark Niemiec found a 13-glider synthesis on May 6, 2016.[3]
Reactions
Ctulhu can be cleanly destroyed with a single glider:[9]
| A 1G destruction of Ctulhu (click above to open LifeViewer) |
Notes
- ↑ Omnibus with tub and loaf previously appeared in Mateusz Naściszewski's custom Mateon1_Glider6_5_6_Test symmetry[6] in April 2020[7] before later appearing in C1 in January 2022.
- ↑ On May 18, 2020, Goucher found a soup that temporarily produces an asymmetric 46-bit still life which is then converted into a 44-bit still life.[8]
References
- ↑ Adam P. Goucher. "Haul". Catagolue. Retrieved on May 5, 2016.
- ↑ BlinkerSpawn (May 3, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ 3.0 3.1 Mark Niemiec (May 6, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ shinjuku (#4179541540) (April 26, 2023). Job triggered by Adam P. Goucher at GitLab Catagolue project.
- ↑ testitemqlstudop (January 17, 2022). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ Adam P. Goucher. "Mateon1_Glider6_5_6_Test". Catagolue. Retrieved on January 12, 2022.
- ↑ Ian07 (April 29, 2020). Message in #cgol on the Conwaylife Lounge Discord server
- ↑ praosylen (May 22, 2020). Message in #cgol on the Conwaylife Lounge Discord server
- ↑ squareroot12621 (September 5, 2023). Re: Thread for your unsure discoveries (discussion thread) at the ConwayLife.com forums
External links
- cis-Cthulhu at Adam P. Goucher's Catagolue
- trans-Cthulhu at Adam P. Goucher's Catagolue
- Cthulhu at Wikipedia (origin of name)