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x = 15, y = 15, rule = B3/S23 12bo$10bobo$11b2o$14bo$13bo4$9bo$8bo$bo$2bo$3o$4bo$3bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART THUMBSIZE 2 GPS 2 ZOOM 16 HEIGHT 480 PAUSE 2 T 3 PAUSE 2 LOOP 4 ]]
Pattern type Spark
Number of cells 2
Bounding box 2×2
Discovered by Unknown
Year of discovery Unknown

The duoplet is a two-cell pattern, one of two 2-cell polyplets (the other one being the domino). It is occasionally seen as a spark, and is periodically produced by certain oscillators such as 41P7.2 (incapable of reflecting gliders) and 34P14 shuttle (capable of reflecting gliders).

It can reflect a glider by 90 degrees, as shown in the infobox.

In other rules

It is a period 2 oscillator and also a phoenix in a large amount of Life-like rules, namely all rules with B2 and without B0, B1 or S1 such as Seeds.

In rules without B0, B1 or B2, and with S1, it is a still life.

See also

External links