Dear Frank,
I think my comments are started to be not boring now )))
Ok...lets continuing...
The current used SCCT rules are almost ideal...I suggest you again
Just I want to help you my friend, please don't get me wrong...
My rules are very strict Frank, not like your yours!
At least...I don't make double standards...
SCCT has no any derivative or clone engine to be as participant
Exception Houdini...but you know why...I allow it...
And in my eyes its original, because it's based mainly on own ideas...
Yes... Houdini can be Rybka derivative, but 200 Elo stronger than Rybka !!!
Do you know +200 Elo... how can be improved ??? if it is so easy:
Can you do that or any other engine programmer???
There was no any available any stronger engine during 2011 years,
And firstly only Robert Houdart managed to make stronger (+200 Elo) over than Rybka
That means a lot for me...!!!
The same issue for Rybka,
There was no available any other stronger engine,
And firstly only Vasik Rajlich managed to make stronger (+400 Elo) than Fruit
That means a lot for me too...!!!
Btw, I made some calculations...maybe will be useful
1)Rybka 3 is 48 % similar to Fruit 2.1
2)Rybka 3 is +400 Elo stronger than Fruit 2.1
3)Fire 3 is approx 60 % similar to Rybka 3
3)Fire 3 is approx. 50 Elo stronger than Rybka 3
Note:the great Don Dailey's view: +60% sim results can be considered as clones
5)Houdini 4 is approx 60 % similar to Rybka 3
6)Houdini 4 is approx.200 Elo stronger than Rybka 3
Ok...let's take example Twinfish (a 100% clone, optimized against sim test tool),
7)Twinfish is approx 53 % similar to Stockfish
8)Twinfish is approx. 100 Elo weaker than Stockfish
And now do you see the difference ?
In other words,
-We need to check Elo points, really these values help us much...
-Chess engine expert's advise is very important and should be check too
-Of course the great Don's tool should be as a main part in case of detection...
And all together...our rules will be almost perfection !!!
Otherwise we will make double standards again...RED cart )))
And we will see a lot of same or similar chess engines!
Believe me + 100 Elo is not so easy as it looks...
Only talented programmers can do that !!!
Stockfish team,Komodo team, Robert Houdart, Vasik Rajlich,
Vadim Demichev are managed to that...why not others too ??
Note also
Fire chess engine is released later than Rybka!
And definitelyFire is based mainly on Rybka's ideas!!
That's why Fire's Elo points and its similarity is near to Rybka
Can we say same thing for Rybka vs Fruit ???
+400 Elo difference ...
Or
Can we say same thing for Rybka vs Houdini ???
+200 Elo difference too....
Please, please, please...you should change your view...!!!
Note: I am not from Rybka or from Houdini team, but just I don't like injustices
Give me any other example, where I allow clones or derivatives ???
Btw, see below the table please, tell me which engine is clone and should not be tested ???
Just don't say again Rybka and Houdini...
Because both engines are much stronger and based mainly on own ideas (Note: 400 Elo and 200 Elo)
And last, in shortly:
+55% similarity + 100 Elo
Hopes helps this too...
Best,
Sedat
