However, zdr’s spaceship (which is now called Copperhead, as proposed by muzik) is much more awesome for a number of reasons: To be frank, similar event did happen before when the aforementioned Josh Ball pulled loafer out of a hat. zdr said that their program found it in a matter of 19 seconds. After zdr boldly went where no man has gone before, Josh Ball set up the corresponding search in gfind and refound the spaceship in a little over an hour. The idea we all missed is that if the ship is really microscopic, it can be found in reasonable time despite its high period. It appears that low-hanging fruit have been harvested clean during the 46 years of Life research… or, more precisely, it appeared so before zdr’s post. As for higher periods, even the smallest searches would take years on modern computers. The table above shows that ships exist for most of possible speeds, and it seems obvious that the speeds for which there are no ships have been searched by numerous people with good knowledge of search programs, powerful computers and lots of patience. This table does not include oblique speeds, which causes little inconvenience because no elementary oblique ships are known. It is most interesting to find spaceships of new speeds, and the number of speeds that low-period ships can have is unfortunately limited: The algorithms behind these programs are beyond the scope of my article, but the important thing is that the search time goes up exponentially as the period of the ship grows. They are found using programs such as gfind or WLS. There is much more incentive in hunting for elementary spaceships, which can be used for complex constructions. However, the population of tens of thousands to millions of cells causes these spaceships to have no practical value. Engineered ships are the ones that consist of various small components. To explain why this is such a groundbreaking discovery, I should first tell you that Life spaceships can be loosely divided into two categories. It was a 28-cell c/10 orthogonal spaceship: However, what zdr showed us made our jaws drop. When we the lifenthusiasts meet a newcomer, we expect to see things like “brand new” 30-cell 700-gen methuselah and then have to explain why it is not notable.
The day before yesterday forums saw a new member named zdr. If this is not the case, you can try reading an explanatory article but you will still struggle to understand much of the following content. In this article, I assume that you have basic familiarity with Conway’s Game of Life.
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