Octomino II hasslers

	Oscillators
Sparkers	p7 • p8 • p9 • p10 • With specific period • With specific spark type
Hasslers	Traffic light • Honey farm hasslers • Honey farm shuttles • R-pentomino • Pi-heptomino • Lumps of muck • Fleet • Century • B-heptomino • Wing • I-heptomino • Two-glider octomino • Long bun • Procrastinator • Blonk-tie • Teardrop • Butterfly • U-turner • Iwona active region • Octomino II • Pre-pulsar shuttles • Pre-pulsar hasslers • Z-hexomino
Related	With specific hassled object; Dependent reflector loops; Shuttles

A octomino II hassler is an oscillator that hassles one or more copies of octomino II.

Octomino II hasslers known periods:
25	36	37	38	48	138	154	164	192

p25

x = 24, y = 12, rule = B3/S23
5b2o16bo$4bo2bo13b3o$7bo12bo$2bo3bo5bo7b2o$bob2o6b3o$bo8bo2b2o$2o12bo
4b2o$19b2o3$13b2o$13b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 HEIGHT 500 ]]

36P25
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here

p36

x = 31, y = 32, rule = B3/S23
18b2o$13b2o2bobo$13bo3bo4bo$14b3ob5o$16bobo$16bobob3o$17b2obo2bo$22b2o
2$3b2o$3bo2bo5b3o3b2o$4b3o4bo2bo3b2o$11bo$2obob2o4b3o$ob2obo$5bo18b2o$
5b2o18bo$25bob2obo$17b3o4b2obob2o$19bo$11b2o3bo2bo4b3o$11b2o3b3o5bo2bo
$26b2o2$7b2o$7bo2bob2o$8b3obobo$12bobo$8b5ob3o$8bo4bo3bo$11bobo2b2o$
11b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 HEIGHT 500 ]]

p36 found by Mitchell Riley on January 16, 2023
(click above to open LifeViewer)
Catagolue: here

p37

x = 27, y = 24, rule = B3/S23
8bo$8b3o14b2o$11bo13bo$10b2o11bobo$23b2o$15b2o$15b3o$14bo2bo$15b2o$2o
$bo$bobo19b2o$2b2o19bobo$25bo$25b2o$10b2o$9bo2bo$9b3o$10b2o$2b2o$bobo
11b2o$bo13bo$2o14b3o$18bo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 HEIGHT 500 STARTFROM 18 ]]

58P37
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here

p38

x = 27, y = 25, rule = B3/S23
13bo$12bo2bo$12bo2bo2bo$14bo3bo$18bo3$o$3o$3bo14bo$2b2o14b2o$17b2o2$8b
2o$7b2o14b2o$8bo14bo$24b3o$26bo3$8bo$8bo3bo$8bo2bo2bo$11bo2bo$13bo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 HEIGHT 500 STARTFROM 21 ]]

42P38
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here

p48

x = 41, y = 34, rule = B3/S23
11b2o$10bo2bo$13b2o$7bo5b3o$6bobo3bo2bo$7b2o3b3o17bo3bo$31bobobobo$7b
2o3b3o17b2ob2o$6bobo3bo2bo$7bo5b3o13bo9bo$13b2o13bobo7bobo$10bo2bo14bo
3b2ob2o3bo$11b2o6b3o7bo3bobo3bo$18bo2bo8b2obobob2o$18bo2bo10bo3bo$18b
2o3$21b2o$4bo3bo10bo2bo$2b2obobob2o8bo2bo$bo3bobo3bo7b3o6b2o$o3b2ob2o
3bo14bo2bo$obo7bobo13b2o$bo9bo13b3o5bo$25bo2bo3bobo$4b2ob2o17b3o3b2o$
3bobobobo$4bo3bo17b3o3b2o$25bo2bo3bobo$25b3o5bo$26b2o$27bo2bo$28b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 HEIGHT 500 ]]

p48 found by Carson Cheng on October 9, 2022
(click above to open LifeViewer)
Catagolue: here

x = 28, y = 20, rule = B3/S23
9b2o$10bo$b2o7bobo12b2o$obo8b2o12bobo$obob2o16b2obobo$bobobo11b2o3bob
obo$3bo12b2o6bo$2b2o13bo3bo2b2o$b3o17bo2b3o$b3o20b3o$b3o20b3o$b3o2bo17b
3o$2b2o2bo3bo13b2o$3bo6b2o12bo$bobobo3b2o11bobobo$obob2o16b2obobo$obo
12b2o8bobo$b2o12bobo7b2o$17bo$17b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 HEIGHT 500 THUMBZOOM 16 STARTFROM 29 ]]

p48. It is also an R-pentomino hassler and a traffic light hassler.
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here

p138

x = 21, y = 21, rule = b3/s23
8b3o10b$7bo2bo10b$7bo2bo10b$7b2o12b4$17b3ob$17bo2bo$20bo$3o15b3o$o20b$
o2bo17b$b3o17b4$12b2o7b$10bo2bo7b$10bo2bo7b$10b3o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ HEIGHT 600 WIDTH 600 THUMBSIZE 2 ZOOM 14 ]]

Gabriel's p138^{[note 1]}
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here

p154

x = 49, y = 33, rule = B3/S23
b2o5b2o29b2o5b2o$b2o5b2o29b2o5b2o3$bo7bo$3o5b3o31bobo$o9bo$b3o3b3o29b
3o3b3o$38bo9bo$4bobo31b3o5b3o$25b3o11bo7bo$25bo$25bo2bo$b2o5b2o16b3o
10b2o5b2o$b2o5b2o22bobo4b2o5b2o4$b2o5b2o4bobo22b2o5b2o$b2o5b2o10b3o16b
2o5b2o$20bo2bo$23bo$bo7bo11b3o$3o5b3o31bobo$o9bo$b3o3b3o29b3o3b3o$38bo
9bo$4bobo31b3o5b3o$39bo7bo3$b2o5b2o29b2o5b2o$b2o5b2o29b2o5b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 HEIGHT 500 ]]

found by David Raucci on February 8, 2022 ^[1]
(click above to open LifeViewer)
Catagolue: here

p164

x = 51, y = 72, rule = B3/S23
14b2o9b3o$14b2o8b3o$20b3o$2o$2o$11bo$11b2o$11b3o$5b2o4b2o6bo$5b2o4bo6b
3o$17b4o$15b3o$15b2o2bo$10bo4b3obo$10bo$18bo$9bob3o4bo$9bo2b2o$11b3o$
8b4o$8b3o6bo4b2o$9bo6b2o4b2o$15b3o$16b2o$17bo$27b2o$27b2o$6b3o$2b3o8b
2o$b3o9b2o23b2o$38bo$36bobo$23b3o10b2o$22bo2bo$22bo$22b3o$30b2o$29bob
o$31bo$13b2o$12bobo$12bo$11b2o23b2o9b3o$36b2o8b3o$42b3o$22b2o$22b2o$33b
o$33b2o$33b3o$27b2o4b2o6bo$27b2o4bo6b3o$39b4o$37b3o$37b2o2bo$32bo4b3o
bo$32bo$40bo$31bob3o4bo$31bo2b2o$33b3o$30b4o$30b3o6bo4b2o$31bo6b2o4b2o
$37b3o$38b2o$39bo$49b2o$49b2o$28b3o$24b3o8b2o$23b3o9b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 HEIGHT 500 ]]

found by Evin on March 7, 2023,^[2] and reduced by him on September 9, 2025^[3]
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here

p192

x = 65, y = 54, rule = B3/S23
28b2o$28b2o8b2o$38bo$15b2o22bo$15b2o13bo7b2o$30bo6bo$30bo6b3o$40bo$39b
2o$23b2o19bo6bo6bo3b2o$11b2o9bobo19b3o4bobo2b2o4b2o$11bo10bo10b2o12bo
2bobo5b2o$12b3o7bobo7b4o10b2o4bo4bo$14bo8b2o6b2obobo24bob2o$12b2o17bo
bob2o24bobo$12bo18b3o28bo$13bo18b2o28b2o$12b2o8b2o22bo3bo11b2o$22b2o21b
o4b2o10b2o$44b2o4b2o4b2o$5b2o35b6o6b2o2bo$5bo3bob2o29bo5bob5o$b2o3b5o
bo29b2obob3ob2obo5b2o$bo2bobo37bo4bob2o7bobo$3b2o2b2ob2o35bo5bo8bo$5b
ob2ob2o50b2o$5bob2o49bo$6bo49b2obo$b2o27b2o21b2ob2obo$2bo8bo5bo12bo2b
o19b2ob2o2b2o$2bobo7b2obo4bo9bo2bo24bobo2bo$3b2o5bob2ob3obob2o8b3o18b
ob5o3b2o$10b5obo5bo29b2obo3bo$6bo2b2o6b6o35b2o$7b2o4b2o4b2o$b2o10b2o4b
o21b2o$b2o11bo3bo22b2o8b2o$b2o48bo$2bo49bo$bobo24b2o13bo7b2o$2obo24b2o
13bo6bo$7bo4bo4b2o24bo6b3o$5b2o5bobo2bo35bo$b2o4b2o2bobo4b3o31b2o$b2o
3bo6bo6bo15b2o$24b2o9bobo$24bo10bo$25b3o7bobo7b2o$27bo8b2o6b3o$25b2o17bobob2o$25bo18b2obobo$26bo18b4o$25b2o8b2o9b2o$35b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 HEIGHT 500 ]]

found by David Raucci
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here

Notes

↑ It's still up for debate on whether or not this oscillator qualifies as a hassler. see Talk:Octomino II hasslers for more.

References

↑ David Raucci (February 8, 2022). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
↑ EvinZL (March 7, 2023). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
↑ EvinZL (September 9, 2025). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums

[is_this_a_hassler_or_not-1] It's still up for debate on whether or not this oscillator qualifies as a hassler. see Talk:Octomino II hasslers for more.

[post141378-2] David Raucci (February 8, 2022). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums

[post158706-3] EvinZL (March 7, 2023). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums

[post217713-4] EvinZL (September 9, 2025). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums

[note 1]

[1]

[2]

[3]