Fore and back
|Fore and back|
|View animated image|
|View static image|
|Number of cells||24|
|Discovered by||Achim Flammenkamp|
|Year of discovery||1994|
Fore and back (or complementary blinker) is a period 2 oscillator that was found by Achim Flammenkamp in July 1994. It is about the 38th most common naturally-occurring oscillator, being less common than boat on spark coil and griddle and block, about as common as 21P2, and more common than trans-block and long hook eating tub and trans-beacon down and long hook.
In August, 2013 a 24-glider synthesis of this oscillator was found by Martin Grant, based on a soup, provided by Lewis Patterson. Several days later Mark Niemiec improved this result, having found a 20-glider synthesis.
- Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
- "Synthesising Oscillators". Retrieved on September 10, 2013.
- Fore and back at the Life Lexicon