User:PK22

PK22 is a Life enthusiast.

About me

I am interested in cellular automata, mainly CGOL. I have discovered/reduced some syntheses, mainly those of still lifes. I enjoy contributing to Catagolue.

How I discovered CGoL

In late 2023, I was working on random short Python projects to improve my programming ability, and Conway's Game of Life happened to be one of these. Normally I would move on from a project once done, but it prompted me to do more research into CGoL, and I discovered LifeWiki fairly soon after that. I joined the forums roughly a year later.

Discoveries

• March 16-17: I found syntheses for three lakes with no known synthesis. These were my first posts on the forums.

• March 22: I reduced the synthesis of the regenerative loop to 18G, down from 29G. It has since been reduced to 14G.

• April 12: I constructed a 16SL 1G seed for a Coe ship, based on a 5SL dirty seed by TigerCub414. On April 17, I reduced this to 12SL.

• April 29: I constructed a dimer of BTS in 22G. At the time, this was only slightly significant, but the catalyst was later used by Chris857 to create a synthesis for a stator variant of Honey ring on August 5.
• May 3: I found a synthesis for a commonly used stator variant of 31.4 in 53G.

• May 13: After it occurred in one of my G1 hauls, I created a 13SL 1G seed for tempest.

• July 12: I found a synthesis for a stator variant of Jason's p11 in 36G.

Catagolue

My user page: PK22

I uploaded my first hauls in January 2025, initially using apgsearch v1.x and later with the precompiled version 5.x.

Currently, I have two badges: Trillionaire and Sprotsmanship.

My most significant discoveries are new 35 and 37-cell still lifes, and the eighth natural occurrence of tempest.

Pseudo_XX_Test

On July 10, 2025, I published a hacked version of apgsearch v1.1 that featured, among other things, support for new 'pseudo-object' symmetries. So far, these symmetries (in the form of 'Pseudo_<symmetry>_Test') have helped to reduce a few syntheses for pseudo still lifes. The latest version of the script is maintained at User:PK22/apgsearch v1.1 Py3, and I would appreciate some help with searching, particularly for the pseudo-object variants of D4_+2, C2_2, and C1.

OCA

I am interested in OCA, but not as much compared to CGoL. See User:PK22/B36n7eS2-i3 for information about a rule I discovered.

I am also heavily involved in the exploration of B3/S23-a5 - see User:PK22/OCA:Travelling Ts.