Snarkmaker: Difference between revisions

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Removing old snarkmaker. Insert new one since it is much simpler and smaller. Feel free to reverse this
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* 1 glider (suppressed by a single cell) showing where a second Snarkmaker recipe could be safely appended
* 1 glider (suppressed by a single cell) showing where a second Snarkmaker recipe could be safely appended


{{EmbedViewer
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|viewerconfig = #C [[ PAUSE 4 AUTOSTART WIDTH 640 HEIGHT 640 POPUPWIDTH 640 ]]
#C [[ COLOR LABEL Green LABELSIZE 28 ]]
#C [[ LABELT 0 3000 100 LABEL -10 100 2 "recipe to create an offset block" ]]
#C [[ LABELT 4000 9000 100 LABEL -10 100 2 "line up elbow with new block\n(two parts)" ]]
#C [[ LABELT 9500 11200 100 LABEL -10 100 2 "duplicate the elbow,\ncreate a 0-degree elbow" ]]
#C [[ LABELT 12500 252000 100 LABEL -10 100 2 "0-degree slow salvo recipe" ]]
#C [[ LABELT 253000 255000 100 LABEL -10 100 2 "remove 0-degree elbow" ]]
#C [[ LABELT 256000 263000 100 LABEL -10 100 2 "push new elbow back\n(optional)" ]]
#C Define block pattern
#C [[ RLE block 2o$2o! ]]
#C [[ RLE glider 2o$obo$o! ]]
#C [[ PASTE block ]]
#C [[ PASTEMODE OR ]]
#C [[ RLE elbow_to_block 2o$obo$o25$28bo$27b2o$27bobo21$50b2o$50bobo$50bo21$74bo$73b2o$73bobo21$96b2o$95b2o$97bo31$129b2o$128b2o$130bo27$157b3o$157bo$158bo29$190bo$189b2o$189bobo21$212b2o$212bobo$212bo21$234b3o$234bo$235bo20$258bo$257b2o$257bobo22$281b2o$281bobo$281bo21$303b3o$303bo$304bo26$332b2o$332bobo$332bo39$372b3o$372bo$373bo56$431b2o$430b2o$432bo38$470b3o$470bo$471bo20$493b2o$493bobo$493bo37$532b2o$531b2o$533bo29$564bo$563b2o$563bobo22$586b3o$586bo$587bo27$616b2o$616bobo$616bo21$638b3o$638bo$639bo20$662bo$661b2o$661bobo21$684b2o$683b2o$685bo! ]]
#C [[ PASTE elbow_to_block 4 0 ]]
#C elbow_to_block = 0 109 91 93 90 132 115 127 91 90 91 95 90 114 162 233 159 90 155 126 93 118 90 91 90 1114
#C [[ PASTET 4000 109 91 94 91 91 92 90 169 91 90 116 90 113 1114 109 91 93 91 156 91 91 94 90 91 140 91 103 91 91 132 1114 109 90 93 91 91 90 90 100 90 90 146 96 90 90 90 92 156 144 1114 109 91 93 91 132 115 102 90 91 91 91 90 90 154 1122 93 91 118 91 151 90 159 91 92 90 136 90 90 154 90 101 104 165 129 91 109 91 93 91 97 90 91 111 91 116 91 94 330 91 90 95 91 90 90 91 123 90 91 152 90 90 93 91 116 91 131 91 95 188 113 91 91 147 122 91 173 91 91 133 247 92 90 109 91 93 91 129 148 91 93 154 90 134 91 91 90 91 91 111 91 91 91 91 91 109 90 93 91 91 158 94 113 91 90 91 96 90 142 91 109 91 94 91 91 179 91 90 94 91 114 90 166 90 90 90 91 117 90 96 90 90 95 91 91 109 91 93 90 156 91 91 94 91 90 147 117 91 144 90 91 128 100 91 90 105 91 91 109 91 94 91 91 124 91 105 90 169 91 90 116 91 142 90 90 91 109 91 93 91 92 91 90 90 95 102 91 91 91 130 91 90 136 91 91 119 113 90 91 114 90 109 91 94 91 91 179 91 90 94 91 102 91 151 90 90 101 90 91 125 184 90 90 90 109 91 94 91 91 179 91 90 94 91 102 91 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97 91 116 91 93 115 90 91 130 ]]
#C a trailing "90" would mark a safe location for the first glider in a following copy of the recipe
#C [[ PASTE glider 254 250 ]]
#C [[ X 40 Y 10 Z 2 STEP 9 ]]
#C [[ T 12000 ]]
#C [[ T 12001 STEP 64 ]]
#C [[ T 253000 ]]
#C [[ T 253001 STEP 9 ]]
|caption = In order to expand and view annotations:
|rle =  x = 1, y = 1, rule = B3/S23
o!
}}
The Snark construction is completed in a little over 260,000 ticks, which can be reduced to 247,847 by removing the 76 optional trailing gliders and the seven length-256 gaps that mark the transitions between the above sections.
The Snark construction is completed in a little over 260,000 ticks, which can be reduced to 247,847 by removing the 76 optional trailing gliders and the seven length-256 gaps that mark the transitions between the above sections.


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In April {{year|2026}}, [[russellsprouts]] posted an extremely optimized [[single-channel]] Snarkmaker recipe consisting of just 266 gliders.<ref name="post227620" /> This new recipe is nearly an order of magnitude of an improvement over the original 2428-glider recipe that has been used in many [[self-constructing]] patterns.
In April {{year|2026}}, [[russellsprouts]] posted an extremely optimized [[single-channel]] Snarkmaker recipe consisting of just 266 gliders.<ref name="post227620" /> This new recipe is nearly an order of magnitude of an improvement over the original 2428-glider recipe that has been used in many [[self-constructing]] patterns.
{{EmbedViewer
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==Notes==
==Notes==

Revision as of 19:37, 21 April 2026

This page is under construction. Sorry for the inconvenience.

The Snarkmaker is a single-channel stream of gliders that, when aimed to collide with an elbow block in a specific location, will perform a slow glider construction of a Snark, directly on the same lane as the incoming gliders. This allows a construction arm to add one or more lossless elbows, so that it can bend around multiple corners without an exponential increase in construction cost.

The Snarkmaker recipe used in the single-channel and Hashlife-friendly Demonoids, Orthogonoids, spiral growth patterns, and Hydra contains 2,253 gliders, not including preparatory and cleanup operations. The glider count could be considerably reduced with a customized search program.

The full single-channel recipe pattern[note 1] contains 2428 gliders, including

  • 25 gliders for an initial elbow-to-offset-block recipe: this block will be used as the next elbow
  • 31 gliders for a two-stage recipe (14 + 17 gliders): pull the elbow block to line up with the new elbow
  • 19 gliders for an elbow duplicator recipe: the farther elbow will become a slow-salvo target
  • 15 gliders to separate the elbows: the near elbow will be used as a zero-degree elbow so it needs some clearance
  • 2253 gliders for the actual Snarkmaker recipe: this is made up of many 0-degree glider recipes for a slow salvo Snark construction
  • 8 gliders to remove the 0-degree elbow when it's no longer needed
  • 76 gliders (optional): push the new elbow back to a safe distance so that this same Snarkmaker recipe could be used again
  • 1 glider (suppressed by a single cell) showing where a second Snarkmaker recipe could be safely appended

The Snark construction is completed in a little over 260,000 ticks, which can be reduced to 247,847 by removing the 76 optional trailing gliders and the seven length-256 gaps that mark the transitions between the above sections.

The mirror-image Snarkbreaker recipe, removing an existing lossless elbow from a construction arm, is a much cheaper and faster operation.

In April 2026, russellsprouts posted an extremely optimized single-channel Snarkmaker recipe consisting of just 266 gliders.[1] This new recipe is nearly an order of magnitude of an improvement over the original 2428-glider recipe that has been used in many self-constructing patterns.

{{RLE:{{{pname}}}}} #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
(click above to open LifeViewer)

Notes

  1. ↑ Direct download link: snarkmaker.rle

References

  1. ↑ russellsprouts (April 9, 2026). Re: Optimized Snarkmaker (discussion thread) at the ConwayLife.com forums
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