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. I can write programs in Python, but have yet to write any significant search programs.

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.

• August 15: Using a reaction from Pseudo_D4_+1_Test, I proved that even without RCT technology, any 2xN block array is constructible in ≤ 2N+3 gliders. On August 26, I found a more efficient method, meaning all but four arrays are constructible in less than one glider per block.

• August 29: I found a 26G synthesis for a stator variant of Airforce, 10G cheaper than the canonical version.

• September 21: I found a 34G synthesis for a stator variant of Pyrotechnecium, which was used by KtT to create a 40G synthesis for the canonical form.

Gliderless guns

I was the first person to construct gliderless guns that fire non-standard spaceships.

• LWSS on HWSS 3 - Created on September 23, 2025. The first gliderless gun to fire a non-standard spaceship.

• Coe ship - Created on September 25, 2025. The first gliderless gun to not fire a standard spaceship or flotilla thereof. Based on a reaction originally found by TigerCub414.

• MWSS on MWSS 1 - Created on September 27, 2025. Based on a reaction found by Kazyan, with cleanup improved by ThePlayzr.

• Loafer - Created on September 29, 2025. The first gliderless gun to fire a spaceship slower than c/2. Based on a soup found by Charity Engine, with the reaction simplified by Dave Greene and with cleanup improved by EvinZL.

• 2-engine Cordership - Created on October 3, 2025, based on a 3 MWSS synthesis of a switch engine. The first gliderless gun to fire a diagonal spaceship, and the first gliderless gun to fire an engineered spaceship.

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 three badges: Trillionaire, Sprotsmanship, and Limitless.

My most significant discoveries are new 35, 36-cell and 37-cell still lifes, the eighth natural occurrence of tempest., and a new natural infinite growth pattern.

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