Hi all ,
this is a first general answer to all the many contributions here.
First of all, thanks for giving your opinions (more are of course still welcome). For the CEGT testers it was surprising that there is so much interest in Blitz for comparison. Of course like also in our team opinions vary a lot.
First to explain the situation: CEGT really is a promising project and should continue over years. But for the moment we have only around ten fast machines. This means when using more than three machines for Blitz the usual tests and tournaments with 40/40 would be reduced too much and those longer games should always be our main goal.
Blitz anyway is also nice and allows to have more engines and versions, even betas and privates in.
So we had a vote from all CEGT testers and in principle all want to add a Blitz list. There was also a majority for a time control 40/4 adapted, what would then be 40/3 repeated on fast machines. Anyway one of our testers did not accept the vote, because there was no discussion before and opinions were only given with the vote. His proposal is to use somethig like 40/8 or comparable. It is easy to calculate that such a time control already coming close to rapid chess with the available ressources would lead to test again only the elite commercials and a few more amateurs. It is easy to calculate how long a game will last with 40/8 repeated for the many games we have with more than 100 moves.
I resume a few advantages for a time control 40/4 repeated and for Blitz in general:
a) 40/4 is exactly 1/10 of our usual timecontrol
b) we can include more engines, versions and betas and do not have to neglect our 40/40 games too much
c) it offers a quick estimation if engines might be also strong enough for the longer timecontrol
d) 40/4 is well comparable to the 40/40 time scheme and we already have some vast Blitz rating lists with Fischer time control for example the YABRL from Robert Allgeuer and the list from CEGT tester Michael Koppel with 6+4 and 7+4 on faster Athlon?s. I would anyway not say that x+y is worse with a decent increment not causing the engine to blunder in endgames. What I do not like personally is anything like 5+0, because of the time trouble in endgames leading to severe blunders and there are more games with exceed of time limits.
Best Regards
Heinz