Quinti-Snark

A quinti-Snark is a periodic 180-degree pulse divider that utilises a mechanism discovered by Tanner Jacobi on October 31, 2018.

As the domino sparker only hits the reaction once, there are a few choices at different periods like a pentadecathlon for p15. Of these, the p5 quinti-Snark is the most useful because it can act as a period multiplier for all sufficiently large periods. However, if the leftmost eater is removed, it behaves like a x6 period multiplier, for which 64P6 makes it most useful.

The p4 version shown below tends to also be used in minimising the bounding boxes of various glider guns, owing to the thinner sparker by 83bismuth38 and Tanner Jacobi.

x = 96, y = 101, rule = B3/S23 95bo$93b2o$94b2o12$81bo$79b2o$80b2o12$67bo$65b2o$66b2o12$53bo$51b2o$ 52b2o12$39bo$37b2o$38b2o12$25bo$b2o11b2o7b2o$2b2o10bo9b2o$bo10bobo$12b 2o$8bo$7bobo$7bobo$8bo6$11bo$9b2o$10b2o2$2b2o12b2o$bobo12bobo$bo7b2o7b o$2o6bo2bo6bob2o$9b2o6b2obobo$20bobo$5b2o8bo2b3obobo$4bo2bo7b3ob2o2bob o$4bobo2b3o6bo6bo$3b2ob3o4b5obo2b3o$5bo7bo3bobobo$5bobobo4b2obobo2bo$ 4b2ob2o5b2ob2o2b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ WIDTH 600 HEIGHT 600 THUMBSIZE 2 ZOOM 12 AUTOSTART X -38 Y 34 GPS 30 PAUSE 2 LOOP 280 ]]

p4 quinti-Snark (click above to open LifeViewer) RLE: here Plaintext: here

Variants of other periods are seldom used, but could be important if a low-period pulse divider is needed as opposed to a period multiplier; one example is to thin an intermittent glider gun.

x = 344, y = 50, rule = B3/S23 18b2o38b2o38b2o38b2o38b2o38b2o38b2o38b2o38b2o$18bo39bo39bo39bo39bo39bo 39bo39bo39bo$16bobo37bobo37bobo37bobo37bobo37bobo37bobo37bobo37bobo$ 16b2o38b2o38b2o38b2o38b2o38b2o38b2o38b2o38b2o$12bo39bo39bo39bo39bo39bo 39bo39bo39bo$11bobo37bobo37bobo37bobo37bobo37bobo37bobo37bobo37bobo$ 11bobo37bobo37bobo37bobo37bobo37bobo37bobo37bobo37bobo$12bo39bo39bo39b o39bo39bo39bo39bo39bo4$17bo39bo39bo39bo39bo39bo39bo39bo39bo$15b2o38b2o 38b2o38b2o38b2o38b2o38b2o38b2o38b2o$16b2o38b2o38b2o38b2o38b2o38b2o38b 2o38b2o38b2o4$6b2o12b2o24b2o12b2o24b2o12b2o24b2o12b2o24b2o12b2o24b2o 12b2o24b2o12b2o24b2o12b2o24b2o12b2o$5bobo6b2o4bobo22bobo6b2o4bobo22bob o6b2o4bobo22bobo6b2o4bobo22bobo6b2o4bobo22bobo6b2o4bobo22bobo6b2o4bobo 22bobo6b2o4bobo22bobo6b2o4bobo$5bo8b2o6bo22bo8b2o6bo22bo8b2o6bo22bo8b 2o6bo22bo8b2o6bo22bo8b2o6bo22bo8b2o6bo22bo8b2o6bo22bo8b2o6bo$4b2o16b2o 20b2o16b2o20b2o16b2o20b2o16b2o20b2o16b2o20b2o16b2o20b2o16b2o20b2o16b2o 20b2o16b2o3$275b2o5b2o20b2o5b2o$13b2o78b2o38b2o140b2o5b2o20b2o5b2o20b 2o$48b2o8b2o31bo4bo34bo4bo32bo3b2o3bo30bo8bo112bo4bo$3b2o3bob2o4b2obo 3b2o23bo2b6o2bo30bo6bo70bob2ob2ob2obo28bobo6bobo31b2o2b2o34b6o33bo6bo$ 2bo3bobo3b4o3bobo3bo23b2o6b2o30bo8bo31bo6bo30bobo6bobo28bob8obo30bo2b 2o2bo17bo7bo6bo6bo6bo7bo16bo8bo$2bobo5bo2b2o2bo5bobo20b3o10b3o24b5ob4o b5o26b3obob2ob3o26b3obo2b2o2bob3o25b2obobo2bobob2o27bobob4obobo14b3o5b 3o4bo8bo4b3o5b3o15bo8bo$b2o6b2o2b2o2b2o6b2o19bo2bobo4bobo2bo24b3o10b3o 25bo4bo3bo3bo24bo4bobo2bobo4bo27bob4obo28b3obobo2bobob3o12bo9bo5bo6bo 5bo9bo15bo8bo$o2b3o4b2o4b2o4b3o2bo19b2o4b2o4b2o31b4o32b5o2b2ob3o25b3ob o6bob3o25b2obo6bob2o24bo3b2ob4ob2o3bo12b3o3b3o7b6o7b3o3b3o17bo6bo$2o4b 3o3b4o3b3o4b2o63b6o36bo34b3o6b3o28bobo2b2o2bobo26b2o3bo4bo3b2o69bo4bo$ 2b3ob3o10b3ob3o63bo3b2o3bo31b2o5bob4o28bo4bo31bo2bob2obo2bo28b2o2bo2bo 2b2o18bobo26bobo23b2o$2o5bo4b4o4bo5b2o60bo2bo4bo2bo30bo7b2o2bo29b4o33b ob2o2b2obo29bob2o4b2obo$bobo3b2o10b2o3bobo101bobo3b3o36b2o33b2ob2o2b2o b2o$o2b3o3bo2bo2bo2bo3b3o2bo59bobo8bobo27b2o4b6o28bo10bo$b2o3b2o3b6o3b 2o3b2o56b2obobo10bobob2o28b3o4bo25b3o3b4o3b3o26b2o2b4o2b2o55b2o5b2o20b 2o5b2o$2bobo4b2o2b2o2b2o4bobo57bob2obobo6bobob2obo34bobo23bo6b4o6bo24b obo2bo2bo2bobo54b2o5b2o20b2o5b2o$2bob2obobo3b2o3bobob2obo63b2o6b2o37b 2obo2bo23b3o3b4o3b3o26bo10bo$b2o2bob5o4b5obo2b2o107bo3bo2b2o25bo10bo$o 2bob2o4b6o4b2obo2bo104b2o39b2o$bobobobobo8bobobobobo106b2o37b4o$2obo6b 3o2b3o6bob2o100b2obobo37bo4bo$3b2o2b2o3bo2bo3b2o2b2o103bob2obobo32b3o 6b3o$2obo2bo2b3o4b3o2bo2bob2o106b2o30b3obo6bob3o$o3b2o2bo10bo2b2o3bo 137bo4bobo2bobo4bo$b3o5b3o4b3o5b3o139b3obo2b2o2bob3o$3bo7bo4bo7bo143bo bo6bobo$168bob2ob2ob2obo$169bo3b2o3bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 WIDTH 1600 HEIGHT 320 ZOOM 4 Y -5 ]] #C [[ LABELALPHA 1 LABELSIZE 40 COLOR LABEL Blue ]] #C [[ LABEL 17 -10 6 "p3" ]] #C [[ LABEL 57 -10 6 "p4" ]] #C [[ LABEL 97 -10 6 "p5" ]] #C [[ LABEL 137 -10 6 "p6" ]] #C [[ LABEL 177 -10 6 "p7" ]] #C [[ LABEL 217 -10 6 "p8" ]] #C [[ LABEL 257 -10 6 "p9" ]] #C [[ LABEL 297 -10 6 "p14" ]] #C [[ LABEL 337 -10 6 "p15" ]]

Gallery of periodic quinti-Snarks, each using a different domino sparker. From left to right: p3, using a 258P3 p4, using a Heavyweight emulator p5, using a 56P5 p6, using a 64P6 p7, using a Hebdarole p8, using a 76P8 p9, using a 50P9 p14, using a tetradecathlon p15, using a Pentadecathlon (click above to open LifeViewer)

A stable 5x pulse divider is also known:

x = 41, y = 43, rule = B3/S23 bo$2bo$3o11$27bo$25b3o$24bo$24b2o$7bo$7b3o$10bo25b2o$9b2o25bo$33bo3b3o $33b4o3bo$12b2o24bobo$11bo2bo20b2ob2o$12b2o21b2o$38b2o$39bo$38bo$19b2o 17b2o$20bo$17b3o$17bo11b2o5b2o$28bo2bo4bobo$24b2o3bobo6bo$20b2obobo4b o7b2o$21bobo9b2o$20bo2b2o8bo$21b2o11b3o$23b2o11bo$23bo$24bo$23b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ WIDTH 600 HEIGHT 600 THUMBSIZE 2 ZOOM 12 ]]

Stable 5x pulse divider (click above to open LifeViewer)

See also

• Semi-Snark
• Semi-cenark
• Tremi-Snark
• Quadri-Snark