p280 U-turner hassler

p280 U-turner hassler
x = 41, y = 41, rule = B3/S23 15bo2$13b3obo$12bob2o9bo$12b2obo8bobo$10bob3o10bo2$12bo3$35b3o$35b3o$ 35b3o$38b3o$38b3o$5bo23bo8b3o$4bobo22bo$5bo22bo3$30b3o$30b3o$29bobo$3b o25b2o6bo$2b2o32bobo$bob2o32bo$3o2bo$2bobobo$3bobobo$4bo2b3o$5b2obo$6b 2o$6bo$30bo$29b3o$17bo10bob3o$16bobo8bo3bo$17bo8bo3bo$25b3obo$26b3o$27b o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ HEIGHT 600 WIDTH 600 THUMBSIZE 2 ZOOM 12 GPS 28 ]]
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Pattern type	Oscillator
Number of cells	86
Bounding box	43 × 43
Period	280 (mod: 70)
Heat	83.6
Volatility	0.98 | 0.76
Kinetic symmetry	nrc
Discovered by	Lucy D'Agostino iNoMed
Year of discovery	2023
Rules Outer-totalistic rules B3/S23 only # of rules 20 = 1 Isotropic rules B3/S23 only
Glider synthesis Fewest gliders 29† Catagolue-generated RLE synthesis †Can be constructed with 15 gliders using the reverse caber tosser universal constructor.
Pattern files Plaintext 86p280.cells RLE 86p280.rle
Identifiers apgcode xp280_y7g8k7qc8y2gzy426bs521y4121zyt40tckozx4a4yq11501zywgz4en248gycv1g6y4121zx12731yc1zyb4a4y3ooo777zyl111

The p280 U-turner hassler is an oscillator that was discovered by Lucy D'Agostino on August 14, 2023. It was originally found in a 160-cell form which used 34P7s, and was reduced to 86 cells by iNoMed the day after by replacing the p7s with figure eights.

This was the first known engine-based period-280 oscillator, though period-280 LCM and loop-based oscillators were previously known.

A period-140 oscillator can be made by adding another U-turner, shown here:

x = 53, y = 53, rule = B3/S23 16bo$11b2o3b2o$11b2o3b2o$16bo$14bo2bo$14bob3o$13b2o3bo$12bo3b2o$12b3o bo$13bo2bo13bo$14bo14bobo$13b2o3b2o10bo19b2o$13b2o3b2o24b2o4b2o$14bo25b 2ob2obo$39b4obob3o2$43b3obob4o$45bob2ob2o$40b2o4b2o$40b2o2$10bo$9bobo $10bo6b2o$16bobo$15b3o$15b3o17b3o$35b3o$34bobo$34b2o6bo$41bobo$42bo2$ 11b2o$5b2o4b2o$b2ob2obo$4obob3o2$4b3obob4o$6bob2ob2o25bo$b2o4b2o24b2o 3b2o$b2o19bo10b2o3b2o$21bobo14bo$22bo13bo2bo$36bob3o$35b2o3bo$34bo3b2o$34b3obo$35bo2bo$36bo$35b2o3b2o$35b2o3b2o$36bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 600 WIDTH 600 THUMBSIZE 2 ZOOM 10 THEME Book GPS 14 STARTFROM 140 AUTOSTART ]]

The period-140 form of the oscillator. Figure eights will not work as 140 is not a multiple of 8. (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

A 43-glider synthesis of the p280 with figure eights was found by confocaloid on August 16, 2023. On the next day, Chris857 found a 33-glider synthesis of the same version. A reduction to 29 gliders was submitted to Catagolue on August 18.

See also

• U-turner hasslers - lists other known U-turner hasslers
• p224 lumps of muck hassler

External links

• p280 U-turner hassler at Adam P. Goucher's Catagolue