The rumors about Strelka beeing a Rybka clone is still alive

[Isaksen]

Read this article, what some guy posted on Rybkaforum.
http://rybkaforum.net/cgi-bin/rybkaforu ... id=1655#fp

[James Constance]

Well, at least it's a UCI clone now! lol

[Denis P. Mendoza]

This annoying issue will just die a natural death!

[Christopher Conkie]

This annoying issue will just die a natural death!

If the dark avenger can read asm so can anyone else.

Of course one would need an uncompressed rybka to do that, which would narrow it down a bit.

And if one had the eval or the weights......

If.....

Christopher

[Alexander Schmidt]

... or has at least parts of Rybka code inside.

Try positions with Kings only, you will have the same behaviour in all of this positions:

4K3/8/4k3/8/8/8/8/8 w - - 0 1

Rybka:

213.490<--1:info depth 3 score cp -28 time 1 nodes 114 nps 116736 pv e8f8
213.490<--1:info depth 4 score cp -22 time 1 nodes 335 nps 343040 pv e8f8
213.490<--1:info depth 5 score cp -28 time 1 nodes 619 nps 633856 pv e8f8 e6f6
213.490<--1:info depth 6 score cp -22 time 1 nodes 1331 nps 1362944 pv e8f8 e6f6 f8e8
213.490<--1:info depth 7 score cp -16 time 1 nodes 2411 nps 2468864 pv e8f8 e6f6 f8e8 f6e5
213.490<--1:info depth 8 score cp -10 time 1 nodes 4296 nps 4399104 pv e8f8 e6f6 f8e8 f6e5 e8e7
213.490<--1:info depth 9 score cp -16 time 1 nodes 5804 nps 5943296 pv e8f8 e6f6 f8e8 f6e5 e8e7 e5d5 e7d7
213.490<--1:info depth 10 score cp -10 time 1 nodes 8634 nps 8841216 pv e8f8 e6f6 f8e8 f6e5 e8e7 e5d5 e7d7
213.507<--1:info depth 11 score cp 0 time 1 nodes 15453 nps 15823872 pv e8f8 e6f6 f8e8 f6e5 e8e7 e5d5 e7d7 d5c5 d7e6


Strelka:

226.897<--1:info depth 5 score cp -28 time 0 nodes 229 nps 0 pv e8f8 e6f6 f8e8 f6e5 e8e7
226.897<--1:info depth 6 score cp -22 time 0 nodes 448 nps 0 pv e8f8 e6f6 f8e8 f6e5 e8e7 e5d5
226.897<--1:info depth 7 score cp -28 time 0 nodes 811 nps 0 pv e8f8 e6f6 f8e8 f6e5 e8e7 e5d5 e7d7
226.897<--1:info depth 8 score cp -22 time 0 nodes 1569 nps 0 pv e8f8 e6f6 f8e8 f6e5 e8e7 e5d5 e7d7 d5e5
226.897<--1:info depth 9 score cp -16 time 0 nodes 2893 nps 0 pv e8f8 e6f6 f8e8 f6e5 e8e7 e5d5 e7d7 d5d4 d7e6
226.914<--1:info depth 10 score cp -10 time 0 nodes 4891 nps 0 pv e8f8 e6f6 f8e8 f6e5 e8e7 e5d5 e7d7 d5d4 d7e6 d4e4
226.914<--1:info depth 11 score cp -16 time 0 nodes 6678 nps 0 pv e8f8 e6f6 f8e8 f6e5 e8e7 e5d5 e7d7 d5d4 d7e6 d4e4 e6d6
226.914<--1:info depth 12 score cp -10 time 0 nodes 9715 nps 0 pv e8f8 e6f6 f8e8 f6e5 e8e7 e5d5 e7d7 d5d4 d7e6 d4e4 e6d6 e4d4
226.914<--1:info depth 13 score cp 0 time 0 nodes 18640 nps 0 pv e8f8 e6f6 f8e8 f6e5 e8e7 e5d5 e7f6 d5e4 f6e6 e4d4 e6d6 d4e4 d6e6

substract 2 of Strelka's depth and you will see there is always the same score in King vs. King positions. Note that Strelka gives more info strings as Rybka.

Though I defended Strelka in the past, this looks like a real evidence for me. STrelka is a clone.

OK Chris, you where right

Best,
Alex

[Dr.Wael Deeb]

Ok,but how did he did it for God sack

[fern]

IF it is a clone, perhaps the mystery of how the author did it could be solved IF we remember that he has an expertize in codes, decoding, cryptography and so on, as far it was told here.

Nevertheless I still put my faith in the man until the contrary be proved
Fernando

[F. Bluemers]

It has just been (re-)proved Fernando,I think you are on your own.

If i understood correctly,Sergei Markoff had swapped source-codes with the clone-guy.
We might see one or two smarthink clones in the future.
And what can/will Seirgei do with the sources he got?I guess it leaves him emptyhanded.



Best
Fonzy

[Dr.Wael Deeb]

It has just been (re-)proved Fernando,I think you are on your own.

If i understood correctly,Sergei Markoff had swapped source-codes with the clone-guy.
We might see one or two smarthink clones in the future.
And what can/will Seirgei do with the sources he got?I guess it leaves him emptyhanded.



Best
Fonzy

If this scenario is true,the consequences will be horrible.....

[Werner]

Hi Alex,
this does not work in all positions:

8/8/8/8/8/5K2/8/5k2 w - - 0 1
Strelka 1.8

338859<1:info depth 5 score cp 33 time 0 nodes 264 nps 0 pv f3e3 f1e1 e3d3 e1f2 d3d4
338859<1:info depth 6 score cp 27 time 0 nodes 516 nps 0 pv f3e3 f1e1 e3d3 e1f2 d3d4 f2e2
338859<1:info depth 7 score cp 21 time 0 nodes 1091 nps 0 pv f3e3 f1e1 e3d3 e1f2 d3d4 f2e2 d4e4
338859<1:info depth 8 score cp 15 time 0 nodes 2609 nps 0 pv f3e3 f1g1 e3d4 g1f2 d4e4 f2e2 e4e5 e2e3
338859<1:info depth 9 score cp 9 time 0 nodes 4725 nps 0 pv f3e3 f1g1 e3d4 g1f2 d4e4 f2e2 e4e5 e2e3 e5d5
338859<1:info depth 10 score cp 15 time 0 nodes 9665 nps 0 pv f3e3 f1g1 e3d4 g1f2 d4e4 f2e2 e4e5 e2f3 e5d5 f3e3
338859<1:info depth 11 score cp 9 time 0 nodes 15623 nps 0 pv f3e3 f1g1 e3d4 g1f2 d4e4 f2e2 e4e5 e2f3 e5d5 f3e3 d5e5
338859<1:info depth 12 score cp 0 time 0 nodes 19319 nps 0 pv f3e3 f1g1 e3d4 g1f2 d4e4 f2e2 e4d4 e2f2

Rybka 1.0 beta w32

479188<1:info depth 3 score cp 33 time 1 nodes 165 nps 168960 pv f3e3
479188<1:info depth 4 score cp 27 time 1 nodes 356 nps 364544 pv f3e3
479188<1:info depth 5 score cp 21 time 1 nodes 826 nps 845824 pv f3e3 f1e1
479188<1:info depth 6 score cp 27 time 1 nodes 1729 nps 1770496 pv f3e3 f1e1 e3d3
479188<1:info depth 7 score cp 21 time 1 nodes 2376 nps 2433024 pv f3e3 f1e1 e3d3 e1f2
479188<1:info depth 8 score cp 15 time 1 nodes 3905 nps 3998720 pv f3e3 f1e1 e3d3 e1f2 d3e4
479188<1:info depth 9 score cp 9 time 1 nodes 7447 nps 7625728 pv f3e3 f1e1 e3d3 e1f2 d3e4 f2e2
479188<1:info depth 10 score cp 15 time 1 nodes 10910 nps 11171840 pv f3e3 f1e1 e3d3 e1f2 d3e4 f2e2 e4d4 e2d2
479188<1:info depth 11 score cp 9 time 1 nodes 16023 nps 16407552 pv f3e3 f1e1 e3d3 e1f2 d3e4 f2e2 e4d4 e2d2
479203<1:info depth 12 score cp 0 time 16 nodes 26212 nps 1677568 pv f3e3 f1e1 e3d3 e1f2 d3e4 f2e2 e4d4 e2d2 d4c4 d2e2