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True period 24 gun
x = 43, y = 32, rule = B3/S23
23bo2bo$21b6o$17b2obo8bo$13b2obobobob8o2bo$11b3ob2o3bobo7b3o$10bo4b3o
2bo3bo3b2o$11b3o3b2ob4obo3bob2o$12bobo3bo5bo4bo2bo4b2obo$10bo8bob2o2b
2o2b2o5bob2obo$10b5ob4obo4b3o7bo4bo$15b2o4bo4bob3o2b2obob2ob2o$12b5ob
3o4b2ob2o3bobobobobo$11bo5b2o4b2obob2o5bo5bo$12b5o6b2obo3bo3bobob2ob2o
$2ob2o9b2o2bo5bobo4bo2b3obobo$bobobobob2o3b3obo6bo2bobo4b3o2bo$o2bo7bo
6b2o3b3o8bobob2o$3o2bo4b2o11bo10bo$5b4obo17b2o4b2o$2b2obo6bo14bo3bo2b
2o$bo4bo3bo16bo6b2o$b3obo4bo16bo3bo2bo$11bo2bo3bo9b2o4bobob2o$b3obo4bo
8b2o3bo10b3o2bo$bo4bo3bo7bo6bo8b3obobo$2b2obo6bo10b3o8bobob2ob2o$5b4ob
o24bo5bo$3o2bo4b2o21bobobobobo$o2bo7bo9b2o10b2obob2ob2o$bobobobob2o10b
o8bo5bo4bo$2ob2o17b3o6bo4bob2obo$24bo4b3o5b2obo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ AUTOSTART ]]
View static image
Pattern type
Gun
Number of cells
335
Bounding box
43 × 32
Period
24
Barrels
1
Discovered by
Noam Elkies
Year of discovery
1997
Period-24 glider gun is a true period 24 gun discovered by Noam D. Elkies in 1997 .[1] It uses four large period 4 oscillators (two of them variants of fountain , the other two adjoined by common casing ) to hassle two T-tetrominos , which react together to produce gliders. The form on the right is a reduced variant found by Karel Suhajda.[2] The eater 1 can be replaced with a unix for compacting purposes, such as in the period-48 glider gun .
No more than five days after the initial discovery, Elkies found a method to double the period of the gun, resulting in the first known period 48 glider gun.[1] A smaller version was found in 2016 by Tanner Jacobi, using Rich's p16 to double the period.[3]
Gallery
Original period 24 glider gun.
Period 48 glider gun.
[[:RLE:P24LWSS]]
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ GPS 24 LOOP 48 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 4 HEIGHT 480 ]]
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x = 40, y = 31, rule = B3/S23
5b2ob2o4b2o3b2o4b2ob2o$5b2obobo3b2o3b2o3bobob2o$8bo5bobobobo5bo$8bo2bo
11bo2bo$9bo15bo$3bobo7bob2ob2obo$b3ob3o5bo2bobo2bo$o7bo4b3o3b3o7b2o3bo
$bob6o19bo2bobobo2bo$b2o4bo20bob2obob4o$3bo3b2o18b2o4bo$2bobo2bobo10bo
4bo3b4ob2ob2o$3bo2bo13bo7bobobobobo2bo$6bo3bo2b2o9bo3bo3bo2bo2b2o$6bo
3bo2b2o9bo6b2o$6bo6bo14b3obo2bo$6bo2bo11bo3bo4bo2b3o$7bo14bo4b2obobo$
5bobobo10b3o5bobo2b3o$4bobob2o18bobo4bo$4bobo6b5o11bo$5b2o4b3obob3o$
10bo4bo4bo6bo$10bob2o2bob2obo6bo$11bo2b2o3bobo4b3o$12b2o2bo2bob2o$14bo
4bobo2bo$14b4ob2o2b2o$18bo14bo$16bobo15bo$16b2o14b3o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ AUTOSTART GPS 24 LOOP 48 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 372 ]]
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x = 69, y = 66, rule = B3/S23
10b2ob2o15b2ob2o$10b2obo5bo5bo5bob2o$13bo4b2o5b2o4bo$13b2o2bo9bo2b2o$
18b2obobob2o$8bobo8b3ob3o11b2o$6b3ob3o23bobo$5bo7bo22b3o$6bob6o21bo$6b
2o4bo5bo7bo7bob4o$8bo3b2o3b4o3b4o4b2obo4bo$7bobo2bobo2bo3bobo3bo3bobob
ob2obob3o$8bo2bo6bo2bobo2bo4b3obob2obobobo$11bo3bo2b3o3b3o8bo4bob2o$
11bo3bo20b4obo6b2ob2o3b2ob2o$11bo28bo6bo5bobo5bo$11bo2bo22b3o12b2ob2o$
12bo24bobo10bo7bo$10bobobo22b2o8bo2bob2ob2obo2bo$9bobob2o14bo18bo3bo3b
o3bo$9bobo6b5o7bo18b2ob2ob2ob2o$10b2o4b3obob3o3b3o19bo2bobo2bo$15bo4bo
4bo25bobobobo$15bob2o2bob2obo25bo3bo$16bo2b2o3bobo$17b2o2bo2bob2o7bo$
12b2o5bo4bobo2bo6bo$8b2obobo5b4ob2o2b2o4b3o3bo2bo20bo2bo$9bobo11bo20bo
23bo$9bobo7b2o2bo16bo3bo19bo3bo$8b2o3bob2obob3o7b2o9b4o20b4o$7bo3b4obo
bo12b2o$8b3o3bo3bob3o7bo$11b4ob2o2bo2bo$8b2obo8bobo12b2o14b2o$7bobo2bo
2b5obo12b2o14bobo$2o5bo3bo3bo4bo3b2o10bo13bo$2o6b3o6b3o5b2o17b2o2b2ob
4o$10bob4obo6bo19bo2bobo4bo$4o7b6o29b2obob2o2b2o$o2bo8b4o25b2o4bobo3b
2o2bo$26b2o12b2o5bobob2o2b2obo$18b2o7bo14bo5bo4bo4bo$6b3o10b2o4bo23b3o
bob3o4b2o$4bo3b2o8bo4b4o12bo11b2ob2o6bobo$4bobo2b2o11bo4bo5bo4bobo18b
2obobo$3bo5bo11bob5o5b3o2bobo6b2o10bobobo$4b5o12bo6b2o6bobob2o4b2o13bo
$20b2obobobo2bo2b2obobo3bo5bo5bo5b2o$4b5o11bo2bobobob2o2bo4b2ob3o11bo
3b3o$3bo5bo11b2obo2bo6b3o4b3o10b2o3b3o$4bobo2b2o9bo3bob2ob2o2b2obo4b3o
10bo4b3o$4bo3b2o10b2obobo3bo4bobobo2b3o4bo10b3o3bo$6b3o12bobo2b2o2b3ob
ob2obo2bo4bobo10b2o2bobo$21bo2bobo8bo4b2o22bo2bo$22b2o2bo3b4obob2obo
20bo$o2bo14b2o6b2o2bo2bobobo2bo20b6obo$4o3b2o10bo14bo3b2o8bo5bo5bo7bo$
6bo3b9o28b3o3b3o5b3ob3o$2o4bobob7o2b3o24bo2b2ob2o2bo6bobo$2o3b2ob2o2b
4o2bo2bo21b2o13b2o$8bo2bo7b2o21bo6b2ob2o6bo$5b2obobobo29bob2o11b2obo$
6bo4bo27b2obo5b2o3b2o5bob2o$6bob3o28b2ob2o5bo3bo5b2ob2o$7b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ AUTOSTART GPS 12 LOOP 48 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 6 WIDTH 480 HEIGHT 480 ]]
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See also
Period-20 glider gun
External links
References