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x = 20, y = 21, rule = B3/S23 14b3o6$2bo$3b2o$3bo14bo$18bo$18bo$19bo$18b2o$7b2o$8bo5$2o$bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
Pattern type Methuselah
Number of cells 19
Bounding box 20×21
Lifespan 28786 generations
Final population 3091
L/I 1515.1
F/I 162.7
F/L 0.107
L/MCPS 685.4
Discovered by Andrzej Okrasinski
Year of discovery 2004

Iwona is a methuselah with a lifespan of 28786 generations that was found by Andrzej Okrasinski on August 20, 2004.

Stable pattern

The stable pattern that results from Iwona has 3091 cells and consists of 213 blinkers (including 21 traffic lights), 196 blocks, 143 beehives (including nine honey farms), 47 gliders, 34 loaves, 31 boats, nine ships, six ponds, six tubs, three barges, two ship-ties in the form of a fleet, and one paperclip.[1]

Iwona final.png
Generation 28786

Initial active region

The initial six-cell active region, for lack of a better name, is sometimes called the "Iwona active region". It is common enough and active enough to be used in conduits, but extremely little has been attempted.

See also


  1. New Methuselah Records at Game of Life News. Posted by Heinrich Koenig on February 21, 2005.

External links