Gourmet

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Gourmet
x = 20, y = 20, rule = B3/S23 10b2o$10bo$4b2ob2obo4b2o$2bo2bobobo5bo$2b2o4bo8bo$16b2o2$16b2o$o10bo3b obo$3o7b3o3bo$3bo6bobo4b3o$2bobo14bo$2b2o2$2b2o$2bo8bo4b2o$4bo5bobobo 2bo$3b2o4bob2ob2o$9bo$8b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ HEIGHT 600 WIDTH 600 THUMBSIZE 3 ZOOM 24 GPS 4 LOOP 32 ]]
Pattern type Oscillator
Oscillator type Shuttle
Number of cells 66
Bounding box 20 × 20
Period 32 (mod: 8)
Heat 6.3
Volatility 0.60 | 0.60
Kinetic symmetry nrk
Discovered by David Buckingham
Year of discovery 1978

Gourmet is a period-32 oscillator that was discovered by David Buckingham on March 4, 1978.[1] In terms of its 66 cells, it was formerly the smallest known period 32 oscillator until the discovery of the p32 honey farm hassler in 2021. It consists of four PT8P (each consisting of a cis-boat with tail and an aircraft carrier) hassling a pi-heptomino.

Despite gourmet's similarity with Tanner's p46, the latter was not discovered until 2017.

Generation 1 reveals that the object being hassled is a pi-heptomino

Gallery

x = 20, y = 20, rule = B3/S23 10b2o$10bo$2bob2ob2obo3b2o$2b2obobobo4bo$8bo8bo$16b2o2$16b2o$o10bo3bob o$3o7b3o3bo$3bo6bobo4b3o$2bobo14bo$2b2o2$2b2o$2bo8bo$5bo4bobobob2o$4b 2o3bob2ob2obo$9bo$8b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 GPS 4 ZOOM 14 LOOP 32 AUTOSTART ]]
An alternate form of gourmet using beacons and snakes instead of aircraft carriers
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RLE: here Plaintext: here
Catagoluehere
x = 24, y = 24, rule = B3/S23 11b2o$6b2obo4bob2o$6bo10bo$7b2o6b2o$4b3o2b6o2b3o$4bo2bo8bo2bo$b2obobo 10bobob2o$bobobo12bobobo$3bo16bo$bo2bo14bo2bo$4bo7b3o4bo$o3bo7bobo4bo 3bo$o3bo7bobo4bo3bo$4bo14bo$bo2bo14bo2bo$3bo16bo$bobobo12bobobo$b2obob o10bobob2o$4bo2bo8bo2bo$4b3o2b6o2b3o$7b2o6b2o$6bo10bo$6b2obo4bob2o$11b 2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 GPS 4 ZOOM 8 LOOP 32 AUTOSTART ]]
An alternate stabilization of this oscillator, named pi portraitor, found by Robert Wainwright in 1984 or 1985,[1] using welded heavyweight emulators instead of stable catalysts
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RLE: here Plaintext: here
Catagoluehere
x = 32, y = 32, rule = B3/S23 21bo$20bobo2$13b2o3bo3b2o$13b2o2bo5bo$18bobo$20b2o$14b2o$3b2o8bo2bo$bo bo9bobo4bo$o5bo7bo5bo$bo3b2o2b3o8bo2$3bobo16b2o3b2o$4bo12bo3bo2bo2b2o$ 8bo7b3o3bobo$7bobo6bobo4bo$3b2o2bo2bo16bo$3b2o3b2o16bobo2$11bo8b3o2b2o 3bo$11bo13bo5bo$11bo5b2o9bobo$16bobo8b2o$16b3o$10b2o$11bobo$8bo5bo2b2o $8b2o3bo3b2o2$9bobo$10bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 GPS 4 ZOOM 8 LOOP 32 AUTOSTART ]]
Another alternate stabilization, named popover, found by Robert Wainwright in August 1984,[1] using blinkers and loaf spin catalysts
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RLE: here Plaintext: here
Catagoluehere
x = 34, y = 34, rule = B3/S23 21bo$20bobo$20bobo$19b2ob3o$14b2o9bo$14b2o3b2ob3o$19b2obo2$4bo10b2o$3b obo8bo2bo$3bobo8bobo4bo$b3ob2o8bo5bo$o4bo4b3o8bo$b5o$3bobo17b2o3b2o$18b o3bo2bo2b2o$9bo7b3o3bobo$8bobo6bobo4bo$4b2o2bo2bo$4b2o3b2o16b2obo$27b 2ob3o$12bo8b3o9bo$12bo14b2ob3o$12bo5b2o8bobo$17bobo8bobo$17b3o9bo2$11b ob2o$9b3ob2o3b2o$8bo9b2o$9b3ob2o$11bobo$11bobo$12bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 GPS 4 ZOOM 8 LOOP 32 AUTOSTART ]]
Popover variant based on eater 2, which has a lower period and is thus preferred as a catalyst.
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Catagoluehere
x = 33, y = 33, rule = B3/S23 16bo$16b3o$12b2o5bo$12bo5b2o$4bob2ob2obo14b2o$4b2obobobo11bo3bo$10bo11b 2o4bo$17b2o8b2o$7bobo6b3o$5bo2b2o7b4obo4b2o$5bo2b2o8bo4b2obobo$19bo3b 2o2bo$20bo7b3o$2b2o26bo$bobo$bo7bo$2o8bo20b2o$8b3o20bo$24bo4bobo$2bo20b obo3b2o$2b3o17bo3bo$5bo11b2o3bo3bo$4bobo3bo7b2o2b2ob2o$4b2o4b2o5bo$12b o$4b2o4b2o$4bo5bo11bo$5bo15bobobob2o$4b2o14bob2ob2obo$13b2o5bo$13bo5b 2o$14b3o$16bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 GPS 4 ZOOM 8 LOOP 20 AUTOSTART ]]
Similar-looking dependent reflector loop using 4 copies of PT8P and 4 pi-heptominoes. Unlike the others, this is period 20.
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Catagoluehere


Glider synthesis

On January 18, 2024, Chris857 found syntheses for a few oscillators that combine the supports of gourmet and the eater 2 variant of popover.[2][3] On July 4, 2024, he found a 62-glider synthesis of a gourmet variant, which was quickly improved to 55 gliders,[4] and further improved to 45 gliders on October 10, 2024.[5][6] On October 9, 2024, Chris857 found an 85-glider synthesis of popover,[7][8] which he and KtT improved to 81 gliders the same day,[9][5][10] and which Chris857 further improved to 79 gliders the next day.[5][11]

See also

References

  1. 1.0 1.1 1.2 Dean Hickerson's oscillator stamp collection.
  2. Chris857 (January 18, 2024). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  3. shinjuku (#5963693912) (January 19, 2024). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  4. Chris857 (July 4, 2024). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  5. 5.0 5.1 5.2 Chris857 (October 9, 2024). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  6. shinjuku (#8048983844) (October 10, 2024). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  7. Chris857 (October 9, 2024). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  8. shinjuku (#8030461383) (October 9, 2024). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  9. KtT (October 9, 2024). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  10. shinjuku (#8036720036) (October 9, 2024). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  11. shinjuku (#8042017651) (October 10, 2024). Job triggered by Adam P. Goucher at GitLab Catagolue project.

External links