ConwayLife.com

I initially noticed this a while ago, but this issue seems to be getting worse. I have a dedicated ticket for it over at GitLab (https://gitlab.com/apgoucher/catagolue/-/issues/24), but the amount of objects has expanded since to the point where I felt a thread listing cases of them would be appropriate.

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The following are spaceships reacting in an ultimately nontrivial way (births happen that otherwise would not) with a p24 smoky Schick-based ship:

- https://catagolue.hatsya.com/object/xq2 ... sqe4/b3s23
- https://catagolue.hatsya.com/object/xq2 ... sqe4/b3s23
- https://catagolue.hatsya.com/object/xq2 ... sqe4/b3s23

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Glider shuttles, especially of high periods, seem to be consistent offenders when it comes to this:

- https://catagolue.hatsya.com/object/xp1 ... zys3/b3s23
- https://catagolue.hatsya.com/object/xp2 ... zy43/b3s23
- https://catagolue.hatsya.com/object/xp3 ... u757/b3s23
- https://catagolue.hatsya.com/object/xp3 ... zyj3/b3s23
- https://catagolue.hatsya.com/object/xp4 ... 6757/b3s23
- https://catagolue.hatsya.com/object/xp4 ... zyy3/b3s23
- https://catagolue.hatsya.com/object/xp5 ... l757/b3s23
- https://catagolue.hatsya.com/object/xp6 ... zya3/b3s23
- https://catagolue.hatsya.com/object/xp6 ... 0757/b3s23
- https://catagolue.hatsya.com/object/xp7 ... zyp3/b3s23
- https://catagolue.hatsya.com/object/xp7 ... 2522/b3s23
- https://catagolue.hatsya.com/object/xp8 ... ya11/b3s23
- https://catagolue.hatsya.com/object/xp9 ... r757/b3s23

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Not yet listed here are several rather boring oscillators created from capped guns, as well as spaceships from suppressed rakes, which are also misclassified as pseudo despite not actually being pseudo.

muzik wrote: March 8th, 2022, 6:25 am <snip>

Note that in this commit, calcyman switched from a dsu-based approach to an algorithm that (if I got it right) first seperates the islands and then "connects" them if they rely on each other to be stable, for a speedup. This could be (one) cause for it.