Callahan G-to-H

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Callahan G-to-H
x = 34, y = 23, rule = B3/S23 4bo9bo$4b3o5b3o$bo5bo3bo$2bo3b2o3b2o$3o$9bo$8bobo$8bobo$9bo$31bo$31bo$ 20b2o9b3o$14b2o4b2o11bo$8b2o3b2o$7bo2bo4bo$2b2o4b2o$bobo$bo$2o$10b2o$ 10bo$11b3o$13bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ THUMBNAIL THUMBSIZE 2 WIDTH 600 HEIGHT 600 GPS 20 LOOP 96 ZOOM 16 PAUSE 2 T 95 PAUSE 2 AUTOSTART ]]
Pattern type Conduit
Conduit type Stable
Input Glider
Output Herschel
Number of cells 38
Bounding box 22 × 23
Step Unknown
Recovery time
(ignoring FNG if any)
92 ticks
Minimum overclock period
(ignoring FNG if any)
Unknown
Spartan? Yes
Discovered by Paul Callahan
Year of discovery 1998
Ambox notice.png This article may require cleanup to meet LifeWiki's quality standards.
In the viewer added in https://conwaylife.com/w/index.php?diff=141073&oldid=115783 the period labels are very visible, but the actual patterns are shown too small to see their structure/cells - can someone make the patterns more visible?

Callahan G-to-H is a stable glider-to-Herschel converter discovered by Paul Callahan in November 1998. It consists of four eater 1s, one block, and one or two beehive(s), and so it is Spartan.

The initial stage converts two gliders into a Herschel; the south-east glider deletes the extra beehive and the north-west glider triggers the bait beehive. In the infobox pattern, a ghost Herschel marks the output location. The north-west eater 1 can be replaced with a toad to give slightly more clearance on that side. As a 2G-to-H, or if overclocking is used with appended conduits with a correctly timed output glider, it has a repeat time of 92 ticks.

Beehive cleanup

The beehive-cleaning glider coming from the southeast can be supplied by a number of means.

  • If a L156 is added and its spare glider is reflected with two Snarks, the resulting repeat time is 386 ticks.[1]
x = 34, y = 34, rule = B3/S23 4bo9bo$4b3o5b3o$7bo3bo$2bo3b2o3b2o$3bo$b3o4$31bo$31bo$20b2o9b3o$20b2o 11bo$8b2o$7bo2bo$2b2o4b2o$bobo$bo$2o$10b2o$10bo$11b3o$13bo11b2o$21b2o 2b2o$20bobo$21bo$17bo$16bobo4b2o$15bo3bo3bo$14bo3bo5b3o$13bo3bo8bo$12b o3bo$13bobo$14bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBNAIL THUMBSIZE 2 WIDTH 600 HEIGHT 600 GPS 20 LOOP 260 ZOOM 16 PAUSE 2 T 91 PAUSE 2 AUTOSTART ]]
The p8 G-to-H, with a minimum recovery time of 192 ticks (or 96 via overclocking)
(click above to open LifeViewer)
RLE: here Plaintext: here
x = 532, y = 201, rule = B3/S23 48b2o$49bo$49b3o5$151b2o$152bo111b2o114b2o$152b3o110bo115bo$265b3o113b 3o$519b2o$520bo$520b3o5$50b2o$50b2o7b2o$59bo$57bobo$57b2o3$26b2o15b2o 108b2o$27bo14bobo108b2o7b2o102b2o114b2o$24b3o15bo119bo103b2o7b2o105b2o 7b2o$24bo16b2o117bobo112bo115bo$160b2o111bobo113bobo129b2o$4bo9bo258b 2o114b2o130b2o7b2o$4b3o5b3o515bo$7bo3bo117b2o15b2o380bobo$6b2o3b2o117b o14bobo94b2o15b2o97b2o15b2o151b2o$127b3o15bo97bo14bobo98bo14bobo$3bo5b o117bo16b2o94b3o15bo97b3o15bo$4b2o2bobo229bo16b2o97bo16b2o122b2o15b2o $3b2o3bo98bo9bo380bo14bobo$9bo97b3o5b3o102bo9bo105bo9bo148b3o15bo$110b o3bo105b3o5b3o105b3o5b3o148bo16b2o$109b2o3b2o107bo3bo111bo3bo$20b2o13b 2o185b2o3b2o109b2o3b2o130bo9bo$20b2o13b2o69bo5bo362b3o5b3o$8b2o97b2o2b obo105bo5bo109bo5bo136bo3bo$7bo2bo95b2o3bo108b2o2bobo109b2o2bobo134b2o 3b2o$2b2o4b2o102bo106b2o3bo110b2o3bo$bobo221bo115bo132bo5bo$bo57b2o414b 2o2bobo$2o57b2o62b2o13b2o334b2o3bo$10b2obo109b2o13b2o96b2o13b2o99b2o13b 2o111bo$10b2ob3o95b2o123b2o13b2o99b2o13b2o$16bo93bo2bo110b2o114b2o$10b 2ob3o43b2o44b2o4b2o110bo2bo112bo2bo148b2o13b2o$8bo2bobo2b3o40b2o43bob o111b2o4b2o108b2o4b2o149b2o13b2o$8b2o5bo2bo26b2o57bo57b2o53bobo113bob o143b2o$12b3obo27bobo56b2o57b2o53bo57b2o56bo57b2o85bo2bo$11bo4b2o2b2o 22bo68b2o101b2o57b2o55b2o57b2o80b2o4b2o$11bo2b2o3bobo21b2o8b2o58bo112b 2o114b2o128bobo$10b2obo3b3o11b2o20bo60b3o109bo115bo129bo57b2o$13b3o4b o2bo3b2o2b2o21b3o59bo45b2o63b3o108b2o3b3o125b2o57b2o$14bo3b2o4bobobo27b o63b2o40b2o65bo45b2o61bobo4bo45b2o88b2o$11b2o2b2o2bobobo3bo89bo2bobo25b 2o125b2o63b4obob2o42b2o88bo$11bo4b4o2bo9bo83bobobobo24bobo111b2o76bo4b ob2obo27b2o103b3o$8b2obo2bo3bo2b2o7bo2bo81bobobo2b2o23bo86b2o24bobo76b ob2obo4bo26bobo105bo45b2o$9bo2b3obob2obo10bo82bobobobo2bo21b2o8b2o75b o2bo23bo76b2o2bobob4ob2o24bo153b2o$9bo5bobo6b5ob3o2b2o75b2ob2ob2obob3o 8b2o20bo75bobobo22b2o8b2o67bobo2bobo4bobo22b2o8b2o129b2o$10b3o2bo2b2o bo2bo3b2obo2bo2bo74bobo10bo4b2o2b2o21b3o72bobob2o9b2o20bo67bo2b4obo2b 2o2bo10b2o20bo129bobo$12bo3bobob2o3b8obob2o76bob2obobo3bo3bobo27bo70b 2obobo2bo4b2o2b2o21b3o65b2o3bobo4bob2o5b2o2b2o21b3o126bo$17bo15bo2bo77b o2bo7bo4bo99bo2bo3b3o2bobo27bo67b2o3bo2bob2o2bo3bobo27bo125b2o8b2o$24b obo3b2o4bo78bo3bobo3bo11b2o88b2obo2bobo2bo4bo96bo5bo4bob3o3bo142b2o20b o$24b2obobo2b4o80b3ob2ob2o6bobo2bo2bo87bo2b2o4b2o103bo5b4o3bo143b2o2b 2o21b3o$27bob3o4b3o79bo4bo9b4o91b2o4bobo8b2o93b2o8bob2o7b2o134bobo27b o$24b3o3bobo2bo2bo80b3obo11b3o92bobobobo8bo101b2obobo8bo136bo$23bo2bo b2o6b2o84bob2o2b2obo7bo90bo4bo10b3o98b2obobo9b3o129bo$23bo2bobobob3ob o84bo2bo3bobo7bobo90b4o13bo102bo12bo128bobo4b2o$24b3o2bo6bo84b2o2b3ob 2o8b2o91bo259bo3bo3bo$27b2o2bob3o94bo99bo260bo3bo5b3o$24b3o6bo91b2o103b 2o258bo3bo8bo$23bo3bo2b2o92bo2bobobo357bo3bo$22bob2obo3b5o88b2ob3ob3o 356bobo$22bobo2b2obo5bo88bobo2bo3bo356bo$21b2obo3b7o2bo87bob2obo2b2o$ 24bobobobo4b2o89bo2bo$24bob2o6bo92b2o$25bo3bobo3b2o$26b3ob2o4bo$28bo6b o$30bobobo$29b2ob2o30$431b2o$432bo$306b2o124b3o$307bo$170b2o135b3o$171b o$171b3o3$54b2o$55bo$55b3o7$433b2o$433b2o7b2o$308b2o132bo$308b2o7b2o121b obo$172b2o143bo122b2o$172b2o7b2o132bobo$181bo133b2o$179bobo227b2o15b2o $179b2o229bo14bobo$56b2o226b2o15b2o104b3o15bo$56b2o7b2o218bo14bobo104b o16b2o$65bo82b2o15b2o115b3o15bo$63bobo83bo14bobo115bo16b2o86bo9bo$63b 2o81b3o15bo222b3o5b3o$146bo16b2o97bo9bo117bo3bo$262b3o5b3o116b2o3b2o$ 32b2o15b2o75bo9bo128bo3bo$33bo14bobo75b3o5b3o127b2o3b2o115bo5bo$30b3o 15bo80bo3bo253b2o2bobo$30bo16b2o79b2o3b2o126bo5bo118b2o3bo$25b2o235b2o 2bobo123bo$10bo9bo104bo5bo129b2o3bo$10b3o5b3o105b2o2bobo134bo$13bo3bo 107b2o3bo272b2o13b2o$12b2o3b2o112bo271b2o13b2o$278b2o13b2o96b2o$9bo5b o262b2o13b2o95bo2bo$10b2o2bobo125b2o13b2o107b2o117b2o4b2o$9b2o3bo127b 2o13b2o106bo2bo115bobo$15bo114b2o128b2o4b2o116bo57b2o$129bo2bo126bobo 121b2o57b2o$124b2o4b2o127bo57b2o74b2o$26b2o13b2o80bobo132b2o57b2o74bo $26b2o13b2o80bo57b2o85b2o124b3o$14b2o106b2o57b2o85bo127bo45b2o$13bo2b o115b2o135b3o170b2o$8b2o4b2o116bo138bo45b2o83b2o24b2o$7bobo123b3o181b 2o77bo4bo2bo22bobo$7bo57b2o68bo45b2o94b2o24b2o90bobo2bo2bo23bo$6b2o57b 2o114b2o88bo5b2o23bobo90bo2bo27b2o8b2o$16b2o149b2o101bobo29bo100bo10b 2o20bo$16bo149bobo102bo29b2o8b2o90bo6b2o2b2o21b3o$17b3o146bo111bo10b2o 20bo87b2o4b3obobo27bo$19bo45b2o98b2o8b2o100bobo5b2o2b2o21b3o82bo5bo6b o$65b2o69bo6bo9b2o20bo96bo3bo3bo3bobo27bo78b3o4bo$51b2o82bobo4bobo4b2o 2b2o21b3o92bobo3bobo5bo111bo4b3o7b2o$50bobo81b3o6b3o2bobo27bo91bo3bo3b o133bo$50bo84bobo4bobo4bo114b2o5bobo13b2o107b3o14b3o$13b2o10b2o22b2o8b 2o75bo6bo120bo7bo14bo127bo$12bo2bo8bo2bo9b2o20bo91b2o108b2obo17b2o4b3o $12bobo10bobo5b2o2b2o21b3o88bo109bo2b2o16bobo5bo113bo$12bo14bo4bobo27b o89b3o107b2o4bo15bo118bobo$12bo2bo8bo2bo5bo99bo2b2o4b2o2bo7bo109b5o8b 2o5b2o111b2o5bo$12bo2bo8bo2bo104bo3b3o2b3o3bo116bo4b2o6b2o118b2o$12bo b3o6b3obo7b2o96bo2b2o4b2o2bo118b2o2bo$16b2o4b2o11bo231bobo$16b3o2b3o12b 3o228bobobo2bo$16b2o4b2o14bo229b2ob4o$12bob3o6b3obo242bo$12bo2bo8bo2b o242bobo$12bo2bo8bo2bo243b2o$12bo14bo$12bobo10bobo$12bo2bo8bo2bo$13b2o 10b2o! #C [[ THUMBSIZE 2 WIDTH 1500 HEIGHT 600 ZOOM 2.6 Y -5 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ LABELALPHA 1 LABELSIZE 30 COLOR LABEL Blue ]] #C [[ LABEL 0 10 1 "p4" ]] #C [[ LABEL 126 10 1 "p5" ]] #C [[ LABEL 252 10 1 "p6" ]] #C [[ LABEL 378 10 1 "p7" ]] #C [[ LABEL 504 10 1 "p8" ]] #C [[ LABEL 0 125 1 "p9" ]] #C [[ LABEL 126 125 1 "p15" ]] #C [[ LABEL 252 125 1 "p29" ]] #C [[ LABEL 378 125 1 "p30" ]] #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
Gallery of periodic Callahan G-to-H, each using a different bouncer that uses a different sparker
(click above to open LifeViewer)


See also

References

  1. Dave Greene (April 26, 2013). Re: Just the place for a Snark! (discussion thread) at the ConwayLife.com forums

External links