This week's featured article

The pi calculator is a device constructed by Adam P. Goucher in February 2010, which calculates the decimal digits of pi and displays them in the Life universe as 8×10 dot matrix characters.
The actual calculation is done in binary, using a streaming spigot algorithm based on linear fractional transformations. The pi calculator is made up of a 188state computer connected to a printing device via period8 regulators and a binarytodecimal conversion mechanism. The complete pattern can be found in Golly's Very Large Patterns online archive.

In the news


Pattern collection

The LifeWiki contains one of the most comprehensive catalogues of patterns available on the internet. Within it you will find:


Did you know...

 ... that all strict still lifes up to and including 14 cells have been found by apgsearch in asymmetrical 16×16 soups?
 ... that c/2 orthogonal and c/4 diagonal were the only speeds of spaceships seen to emerge from asymmetric soups on Catagolue until 2020?
 ... that all currently known standard Herschel conduits produce the same Herschel greatgrandfather pattern, except for Fx158?
 ... that eater 1 is the smallest asymmetric still life?
 ... that in Life, no spaceship can exist with a speed of (m,n)c/x where (m+n)/x > 0.5?
 ... that even without using fixedcost reverse caber tosser technology, an Nbit strict still life – specifically, some length of long long (...) boat or barge – can be constructed for any odd integer N using no more than 34 gliders, and for any even integer N using no more than 33 gliders, using a temporary tubstretcher?
 ... that even without using fixedcost reverse caber tosser technology, an Nbit period2 oscillator can be constructed for any odd integer N using no more than 45 gliders, and for any even integer N using no more than 46 gliders, using a temporary tubstretcher?
 ... that it is currently an open question as to if there exists a periodic pattern whose only predecessors are its own evolutionary sequence?
 ... that it was proved in the early 1970s that reflectorless rotating oscillators exist in Life, but none were found until 2018 when Adam P. Goucher completed the 0E0P metacell?
 ... that there are currently known elementary spaceships with speeds c/7 and c/10 orthogonal, but none with c/8 or c/9?

