Fore and back
Fore and back | |||||||||
View animated image | |||||||||
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Pattern type | Oscillator | ||||||||
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Number of cells | 24 | ||||||||
Bounding box | 7 × 7 | ||||||||
Period | 2 | ||||||||
Mod | Unknown | ||||||||
Heat | 4 | ||||||||
Volatility | 0.15 | ||||||||
Strict volatility | 0.15 | ||||||||
Discovered by | Achim Flammenkamp | ||||||||
Year of discovery | 1994 | ||||||||
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Fore and back (or complementary blinker) is a period 2 oscillator that was found by Achim Flammenkamp in July 1994. It is about the thirty-eighth 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.[1]
Its rotor is the same as the blinker.
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.[2]
In October 2014, Tanner Jacobi found a predecessor for this pattern based on a soup from Adam P. Goucher's apgsearch script, which was eventually optimized to a 6-glider synthesis[3] in November.
See also
References
- ↑ 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.
- ↑ "Soup search results". Retrieved on November 9, 2014.
External links
- Fore and back at the Life Lexicon
- Pages using duplicate arguments in template calls
- Patterns
- Oscillators with 24 cells
- Periodic objects with minimum population 24
- Patterns with 24 cells
- Patterns found by Achim Flammenkamp
- Patterns found in 1994
- Patterns that can be constructed with 20 gliders
- Oscillators
- Oscillators with period 2
- Oscillators with heat 4
- Oscillators with volatility 0.15
- Oscillators with strict volatility 0.15
- Patterns with 180-degree rotation symmetry
- Flipping oscillators
- Billiard table configurations