Lidka: Difference between revisions
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|caption = | |caption = Generation 2 of Lidka is the form in which it was originally found | ||
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Latest revision as of 13:26, 22 January 2026
| Lidka | |||||||
| View static image | |||||||
| Pattern type | Methuselah | ||||||
|---|---|---|---|---|---|---|---|
| Number of cells | 13 | ||||||
| Bounding box | 9 × 15 | ||||||
| MCPS | 21 | ||||||
| Lifespan | 29055 generations | ||||||
| Final population | 1623 | ||||||
| L/I | 2235 | ||||||
| F/I | 124.8 | ||||||
| F/L | 0.056 | ||||||
| L/MCPS | 1383.6 | ||||||
| Static symmetry | C1 | ||||||
| Discovered by | Andrzej Okrasinski David Bell | ||||||
| Year of discovery | 2005 | ||||||
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Lidka is a methuselah that was originally found in the 15-cell form shown below by Andrzej Okrasinski, which has a lifespan of 29053 generations. The 13-cell grandparent with lifespan 29055 shown to the right was soon after found by David Bell. Simon Ekström identified a 13-cell predecessor with a 9×6 bounding box and a lifespan of 29126 on March 8, 2017.[1]
Incidentally, the 9-cell pattern in the lower right corner of this pattern, fitting in a 5×5 bounding box, is also a methuselah in its own right: it stabilizes after 595 generations to a constellation of 182 cells.
Stable pattern
The stable pattern that results from Lidka has 1623 cells and consists of 135 blinkers (including seven traffic lights, three Interchanges), 102 blocks, 57 beehives (including two honey farms), 28 gliders, 18 loaves, 15 boats, six ships, five ponds, two tubs, two ship-ties in the form of a fleet, one toad, one beacon, and one long boat.[2]
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| Generation 29055 |
Gallery
| Simon Ekström's 29126-generation version of Lidka (click above to open LifeViewer) RLE: here Plaintext: here |
| Generation 2 of Lidka is the form in which it was originally found (click above to open LifeViewer) RLE: here Plaintext: here |
See also
References
- ↑ Simon Ekström (March 8, 2017). Re: Long-lived methuselahs (discussion thread) at the ConwayLife.com forums
- ↑ New Record Methuselah at Game of Life News. Posted by Heinrich Koenig on July 14, 2005.
External links
- Lidka at the Life Lexicon
- Lidka minus tub ash at Adam P. Goucher's Catagolue (pseudo-object)
- Methuselah Lidka improved (discussion thread) at the ConwayLife.com forums
- New Record Methuselah at Game of Life News
- Andrzej Okrasinski's Game of Life page describing the discovery