Future of Stockfish, Cyclone and Grapefruit?

[Yurist]

Hi, all! Recently, Some interesting engines have appeared in the Computer Chess World. This are Cyclone, Grapefruit and Stockfish which are based on other old engines( Fruit, Toga and Glaurung). So, I am not against new engines based on another engine's code. But, when will that engine be considered as an independent engine and included in CEGT and CCRL testing not as a Fruit-version, but a new engine??? We need to seta row of criteria which aloow us make a conclusion that THIS engine is a new engine, not Toga 1.4.27 with new name !

[Ovyron]

I propose "When it's 300 rating points stronger than the original engine"

[swami]

Hi, all! Recently, Some interesting engines have appeared in the Computer Chess World. This are Cyclone, Grapefruit and Stockfish which are based on other old engines( Fruit, Toga and Glaurung). So, I am not against new engines based on another engine's code. But, when will that engine be considered as an independent engine and included in CEGT and CCRL testing not as a Fruit-version, but a new engine??? We need to seta row of criteria which aloow us make a conclusion that THIS engine is a new engine, not Toga 1.4.27 with new name !

They can't be considerered new engine in genuine sense, they can always be called "derivatives", there's nothing wrong in adding the derivates to your tournament for personal testing...but IMO it would be even better if one could have seperate ratings list:

one with "original" and "derivatives" put together and another with "Originals complete work" alone. so people can draw their own conclusion.

[swami]

I propose "When it's 300 rating points stronger than the original engine"

I don't agree with that, suppose Toga is rated at 3050, and is 350 elo better than Fruit 2.1, where did the 2700 elo come from?!

[Ovyron]

Remember ELO isn't calculated like that, in your example it's the same than saying Fruit is rated 0 and Toga is rated 350

[Sylwy]

Hi, all! Recently, Some interesting engines have appeared in the Computer Chess World. This are Cyclone, Grapefruit and Stockfish which are based on other old engines( Fruit, Toga and Glaurung). So, I am not against new engines based on another engine's code. But, when will that engine be considered as an independent engine and included in CEGT and CCRL testing not as a Fruit-version, but a new engine??? We need to seta row of criteria which aloow us make a conclusion that THIS engine is a new engine, not Toga 1.4.27 with new name !

Nothing about Strelka , Belka..... .........