House bridge house
| House bridge house | |||||||||
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| Pattern type | Strict still life | ||||||||
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| Number of cells | 18 | ||||||||
| Bounding box | 6 × 8 | ||||||||
| Frequency class | 27.0 | ||||||||
| Static symmetry | Unspecified | ||||||||
| Discovered by | Unknown | ||||||||
| Year of discovery | Unknown | ||||||||
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House bridge house is an 18-cell strict still life consisting of two mutually stabilising houses. It is one of three ways in which two houses can be arranged to create a still life, and the only one which only has a single island.
Having the two constituent houses in a mirror-symmetric arrangement gives "mirrored house" (more commonly called dead spark coil), whereas having them be skewed yet still disjoint yields rotated house.
Commonness
The house bridge house can form when two relatives of pi-heptominoes collide, but pi-heptominoes themselves don't work.
Glider synthesis
All strict still lifes with a population of 22 or fewer cells, all oscillators with 16 or fewer cells, and all spaceships with 31 or fewer cells are known to be glider-constructible. A glider synthesis of this object can be found in the infobox to the right.
See also
External links
- 18.633 at Heinrich Koenig's Game of Life Object Catalogs