Mirage

Mirage
x = 68, y = 46, rule = B3/S23 17bo$14bo3bo3b2o$16bo3bo$15bo3bo3b2o$13bo3bo3bo$8bo2bo2bo3bo3bobo$10bo 5bo3bo$4bo3bo6bo3bo$2bo3bo5bo4bo3bo$bo3bo3bo3bo4bo47bo$3bo3bo53bobo3bo $o3bo3bo3bobo3bo42bo3bo$2bo3bo3bo5bo47bo$bo3bo3bo5bo46bo3bo$3bo3bo3bob o46bo2bo$o3bo3bo6bo22bo19bo$2bo3bo3bo3bo8bo4bo3bo2bo3bo3b2o2bobo2b2o3b o3bo2bo$5bo3bo2bo5bo6bo3bobo5bo3bo13bo3bo3bo$bobo3bo5bo2bo3bo2bo3bo8bo 3bo3b2o2bo2b2o3bo3bo$3bo7bo5bo3bo4bo5bobo3bo3bo5bo5bo3bo3bo$bo3bobo7bo 3bo4bo3bo2bo3bo3bo3bobo5bobo3bo3bo$10bo2bo4bo3bo2bo11bo3bo13bo3bo$3bo 7bo4bo3bo6b2o2bobo2bo3bo6bobo6bo3bo$bo2bobo6bo3bo3bo16bo3bobo4bobo2bo 3bo$2bo6bo9bo5bo4bo3bo4bo7bo3bo5bo$7bo3bo4bobo4bo3bo4bo9bobo3bo$6bo3bo 4bo8bo3bo2bo3bobo3bo4bo3bo2bobo$8bo3bo6bo2bo3bo6bo4bo6bo3bo8bo$5bo3bo 3bo4bo2bo3bo3bo6bo3bo2bo3bo3bo3bo$7bo3bo4bo6bo3bo4bo2bo3bo4bo3bo3bo3bo bo$6bo3bo2bo3bo3bo2bo3bo2bo5bo3bo4bo3bo3bo$8bo6bo10bo7bo3bo6bo3bo5bo$ 36bo3bo2bo3bo3bo$8bobo3bo20bo3bo8bo4bo$11bo25bo14bo2bobo$9bo3bo36bo6bo bo$8bo3bo36bo5bo3bo$10bo3bo37bo3bo$7bo3bo42bo3bo$9bo3bo39bo3bo$8bo3bo 38bo3bo3bo$10bo41bo3bo3bo$54bo3bo$53bo3bo$55bo3bo$56bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 GPS 15 ]]
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Pattern type	Spark
Number of cells	331
Bounding box	68 × 46
Static symmetry	C1
Discovered by	Unknown
Year of discovery	Unknown
Pattern files Plaintext mirage.cells RLE mirage.rle

Mirage (or Fata Morgana) is a pure glider generator in which many sparse cells quickly create 13 gliders. Eight of those gliders construct a Gosper glider gun at generation 34, but the remaining five destroy the gun by generation 73.

Similar patterns based on other glider syntheses can be constructed.

x = 68, y = 46, rule = B3/S23 17bo$14bo3bo3b2o$16bo3bo$15bo3bo3b2o$13bo3bo3bo$14bo3bo3bobo$16bo3bo$ 4bo10bo3bo$2bo3bo10bo3bo$bo3bo3bo8bo47bo$3bo3bo53bobo3bo$o3bo3bo52bo3b o$2bo3bo3bo53bo$bo3bo3bo52bo3bo$3bo3bo3bo51bo$4bo3bo29bo19bo$2bo3bo3bo 12bo4bo6bo3bo3b2o7b2o3bo3bo$5bo3bo8bo6bo3bo7bo3bo13bo3bo$bobo3bo8bo3bo 2bo3bo8bo3bo3b2o5b2o3bo3bo$3bo13bo3bo4bo7bo3bo3bo11bo3bo3bo$bo3bobo7bo 3bo4bo3bo6bo3bo3bobo5bobo3bo3bo$18bo3bo2bo11bo3bo13bo3bo$16bo3bo6b2o7b o3bo6bobo6bo3bo$17bo3bo16bo3bo6bobo2bo3bo$9bo9bo5bo13bo7bo3bo5bo$7bo3b o4bobo4bo3bo16bo3bo$6bo3bo13bo3bo6bobo8bo3bo$8bo3bo9bo3bo11bo6bo3bo$5b o3bo3bo7bo3bo3bo6bo3bo2bo3bo3bo$7bo3bo11bo3bo7bo3bo4bo3bo3bo$6bo3bo2bo 7bo2bo3bo8bo3bo4bo3bo$8bo17bo7bo3bo6bo3bo$36bo3bo6bo3bo$8bobo24bo3bo8b o$11bo25bo17bobo$9bo3bo43bobo$8bo3bo42bo3bo$10bo3bo37bo3bo$7bo3bo42bo 3bo$9bo3bo39bo3bo$8bo3bo38bo3bo3bo$10bo41bo3bo3bo$54bo3bo$53bo3bo$55bo 3bo$56bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 GPS 15 ]] A sparse variant of mirage constructed by Aleph in 2017 (click above to open LifeViewer) RLE: here Plaintext: here