Editing Conway's Game of Life (section)

===Oblique spaceships===
Until the 2010s, all known spaceships could only move orthogonally or diagonally. Spaceships which move neither orthogonally nor diagonally are commonly referred to as ''oblique spaceships''.<ref>{{Cite news|last=Aron|first=Jacob|date=16 June 2010|title=First replicating creature spawned in life simulator|periodical=New Scientist|url=https://www.newscientist.com/article/mg20627653.800-first-replicating-creature-spawned-in-life-simulator.html|access-date=12 October 2013}}</ref><ref name=":1">{{cite web|title=Gemini – LifeWiki|url=https://conwaylife.com/wiki/Gemini|access-date=2013-10-16|publisher=Conwaylife.com}}</ref> On May 18, 2010, Andrew J. Wade announced the first oblique spaceship, dubbed "Gemini", that creates a copy of itself on (5,1) further while destroying its parent.<ref>{{cite web|title=Universal Constructor Based Spaceship|url=https://conwaylife.com/forums/viewtopic.php?f=2&t=399&p=2327#p2327|access-date=2012-06-24|publisher=Conwaylife.com}}</ref><ref name=":1"/> This pattern replicates in 34 million generations, and uses an instruction tape made of gliders oscillating between two stable configurations made of Chapman–Greene construction arms. These, in turn, create new copies of the pattern, and destroy the previous copy. In December 2015, diagonal versions of the Gemini were built.<ref>{{cite web|title=Demonoid|url=https://conwaylife.com/wiki/Demonoid|access-date=18 June 2016|publisher=LifeWiki}}</ref>

A more specific case is a ''knightship'', a spaceship that moves two squares left for every one square it moves down (like a [[Knight (chess)|knight in chess]]), whose existence had been predicted by [[Elwyn Berlekamp]] since 1982. The first elementary knightship, Sir Robin, was discovered in 2018 by Adam P. Goucher.<ref>{{cite web|url=https://conwaylife.com/forums/viewtopic.php?f=2&t=3303|title=Elementary knightship|access-date=9 March 2018}}</ref> This is the first new spaceship movement pattern for an elementary spaceship found in forty-eight years. "Elementary" means that it cannot be decomposed into smaller interacting patterns such as gliders and still lifes.<ref>[https://conwaylife.com/wiki/Elementary "Elementary"], LifeWiki. Retrieved 2018-11-21</ref>