Blockade

Blockade
x = 23, y = 10, rule = B3/S23 2o$2o3$b2o17b2o$b2o17b2o3$21b2o$21b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
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Pattern type	Constellation
Number of cells	16
Bounding box	23 × 10
Static symmetry	Unspecified
Discovered by	Unknown
Year of discovery	1970
Rules Outer-totalistic rules B/S3 – B345678/S012345678 # of rules 214 = 16384 Isotropic rules B/S3a – B1e2-a345678/S012345678
Glider synthesis Fewest gliders 2 Uploaded synthesis RLE blockade_synth.rle
Pattern files Plaintext blockade.cells RLE blockade.rle
Identifiers apgcode xs16_0ggydgj3zop1yd11

The blockade is a common formation of four blocks and is one of the familiar fours. A common evolutionary sequence that leads to its formation is known as lumps of muck, which can be seen by letting the stairstep hexomino evolve.

A half-blockade is an 8-bit constellation consisting of two blocks with two empty rows separating them, offset by one cell. It most commonly forms as part of a blockade, but there are ways it can form by itself, such as the heptomino that is the orthogonally connected part of the MWSS in its less dense phase.

x = 12, y = 7, rule = B3/S23 b2o$b2o2$8bo2bo$2o5bo$2o5bo3bo$7b4o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 8 THUMBSIZE 2 ]]

A half-blockade can eat an LWSS via the double block reaction. (click above to open LifeViewer) RLE: here Plaintext: here

See also

• Bricklayer
• Four skewed blocks

External links

• Blockade at the Life Lexicon
• Blockade at Adam P. Goucher's Catagolue (pseudo-object)
• Half-blockade at Adam P. Goucher's Catagolue (pseudo-object)