Stockfish 1.6

[mcostalba]

Anyway, you asked for a third party opinion and that's exactly what you got. What you do with the result, or if you don't like it, is your problem.

Well, actually I did _not_ ask for it , anyhow I always read your posts with interest because are never trivial....and I usually like them, also in this case, I never wrote that I don't like it

[Gian-Carlo Pascutto]

I expect someone to come out and claim stockfish not to be original work soon.

The authors already claim it's a derived work of Glaurung, I believe, so I'm not sure what you were thinking

Neither are all ideas in Glaurung and Stockfish completely original inventions by their authors. I think someone beat them to that alpha-beta thing.

The important thing is that Stockfish is LEGAL.

[Gian-Carlo Pascutto]

Anyway, you asked for a third party opinion and that's exactly what you got. What you do with the result, or if you don't like it, is your problem.

Well, actually I did _not_ ask for it

Maybe not in the literal sense of the word, but hey:

"You have the robbo sources and the sf sources, please check yourself (or someone that knows how to do) how well robbo fits in sf"

...that's really asking for it in the figurative sense

So basically I confirm Stockfish doesn't contain any RobboLitto code, but that the authors did take some ideas from RobboLitto which they thought could help their program. These ideas are completely negligible compared to the immense effort of writing an original chess engine from scratch.

Also note that as Stockfish is GPL, and RobboLitto is GPL, it would be perfectly ok to just copy code over, if it were technically feasible, and *if* the RobboLitto authors actually had the legal right to slap a license on the product of their reverse engineering.

[kingliveson]

I expect someone to come out and claim stockfish not to be original work soon.

The authors already claim it's a derived work of Glaurung, I believe, so I'm not sure what you were thinking

Neither are all ideas in Glaurung and Stockfish completely original inventions by their authors. I think someone beat them to that alpha-beta thing.

You know what I mean, but anyways...


I am running a little round-robin with the latest release of Stockfish 1.6, Stockfish 1.5.1, Naum 4, Rybka 3, RobboLito .085g3, and Zappa Mexico II. All running on 2 threads except Robbo* and Naum. I forget to change Naum settings and too many games had already been played. I will have to run another test. I will post result soon.

[kingliveson]

xmaseve 4+0 blitz 2009 66/120 games completed

Code: Select all

                              1        2        3        4        5        6        
1   RobboLito 0.085g3 x64     ******** 0½½1     1111½    11½½1    ½11½     1111      17.5/22
2   Rybka 3                   1½½0     ******** ½½½11    1½½1     ½1111    1111      17.0/22
3   Stockfish 1.6 JA 64bit    0000½    ½½½00    ******** 0111     1011     1111      12.0/22
4   Stockfish 1.5.1 JA 64bit  00½½0    0½½0     1000     ******** ½011     ½1½11      9.5/22
5   Naum 4                    ½00½     ½0000    0100     ½100     ******** 10111      8.0/22
6   Zappa Mexico II           0000     0000     0000     ½0½00    01000    ********   2.0/22

-ponder off
-no book
-hash: 128 mb
-cpu: AMD athlon 64x2 3800+ @ 2.0 GHz

note: Robbo* and Naum are using single thread

[solis]

Hi Marco,
look at this score.Mighty Rybka lost and it is not even close.And so many games that SF won playing black peaces.I think we will have a lot of fun testing this new engine.And Vas will now have even more headaches.
Congratulations and Happy holidays.

Engine Score St Ry S-B
1: Stockfish 16.x64 12.5/20 ······ 10-5-5 93.75
2: Rybka 3 7.5/20 5-10-5 ······ 93.75

20 games played / Tournament finished
Name of the tournament: Stockfish games
Site/ Country: QXPx64,Solis,Uruguay
Level: Blitz 10/0
Hardware: Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz4x 3400 MHz with 4,096 MB Memory
Operating system: Microsoft Windows XP 64 Bit Professional Service Pack 2 (Build 3790)

[Dr.Wael Deeb]

Hi Marco,
look at this score.Mighty Rybka lost and it is not even close.And so many games that SF won playing black peaces.I think we will have a lot of fun testing this new engine.And Vas will now have even more headaches.
Congratulations and Happy holidays.

Engine Score St Ry S-B
1: Stockfish 16.x64 12.5/20 ······ 10-5-5 93.75
2: Rybka 3 7.5/20 5-10-5 ······ 93.75

20 games played / Tournament finished
Name of the tournament: Stockfish games
Site/ Country: QXPx64,Solis,Uruguay
Level: Blitz 10/0
Hardware: Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz4x 3400 MHz with 4,096 MB Memory
Operating system: Microsoft Windows XP 64 Bit Professional Service Pack 2 (Build 3790)

Aha,Vas will take anti-headache pills then he'll claim that Stockfish's source code is actualy a stolen Rybka 5 or 6 source code....yeah,it's not funny anymore....
Dr.D

[Werewolf]

Are there any plans to release an opening book with the mighty Stockfish?
An integrated UCI opening book would really make a lovely release.

[Albert Silver]

look at this score.
Engine Score St Ry S-B
1: Stockfish 16.x64 12.5/20 ······ 10-5-5 93.75
2: Rybka 3 7.5/20 5-10-5 ······ 93.75

20 games played / Tournament finished

Please come back after 2000 games.

Kind of funny how his Rybka 3 loses to every engine under the sun. Makes one wonder whether he is really using Rybka 3.

[Graham Banks]

look at this score.
Engine Score St Ry S-B
1: Stockfish 16.x64 12.5/20 ······ 10-5-5 93.75
2: Rybka 3 7.5/20 5-10-5 ······ 93.75

20 games played / Tournament finished

Please come back after 2000 games.

Anybody who downloaded a pirated copy of Rybka 3 (and I'm not suggesting that anybody in this thread did) should realise that fake copies were deliberately put on the net. This could well explain some of the poor results posted around the forums. If anybody with a fake Rybka 3 tries out the same positions with Rybka 2.3.2a, they'll see what I mean.