New engine "Roc"

[Gusev]

Hi Tom,

Can Roc be compiled so as to support Syzygy, like Jose's Gull 3.1 does?

[THyer]

I am testing that now; don't know how much Elo impact it will have.

At first I will be releasing only binaries for Roc with TB support. I used Basil Falcinelli's Fathom code, but I had to mess with it to get a Windows build.

[Marek Soszynski]

Thanks, Tom, for your work.

In infinite analysis the engine doesn't report the time used for each line.

Please always compile a non-popcount release.

[mike angel]

" ... congrats to Tom Hyer it is an improvement !!! "
http://computer-chess.org/forum/index.p ... ad&id=3163

" Hawkeye 1.03 and Gull 16021521 were NOT"
http://computer-chess.org/doku.php?id=c ... ments:gull

[pohl4711]

I started a testrun of Roc 0.2 for my Stockfish-gamebase. 7000 games. 70''+700ms, singlecore: 1000 games versus Stockfish 8, Komodo 10.3, Houdini 5, Shredder 13, Fizbo 1.9, Critter 1.6a, Fire 4...

If Roc 0.2 is running stable and if it is measureable stronger than Gull 3, then Roc 0.2 will replace Gull 3 as an opponent for my Stockfish- and asmFish-testruns. Result not before Wednesday.

Stay tuned.

Stefan (SPCC)

http://spcc.beepworld.de

[Guenther]

I started a testrun of Roc 0.2 for my Stockfish-gamebase. 7000 games. 70''+700ms, singlecore: 1000 games versus Stockfish 8, Komodo 10.3, Houdini 5, Shredder 13, Fizbo 1.9, Critter 1.6a, Fire 4...

If Roc 0.2 is running stable and if it is measureable stronger than Gull 3, then Roc 0.2 will replace Gull 3 as an opponent for my Stockfish- and asmFish-testruns. Result not before Wednesday.

Stay tuned.

Stefan (SPCC)

http://spcc.beepworld.de

I think it should also be compared to LazyGull and Gull 3.1 forked by Basil Falcinelli.

https://github.com/basil00/Gull

[velmarin]

I started a testrun of Roc 0.2 for my Stockfish-gamebase
I think it should also be compared to LazyGull and Gull 3.1 forked by Basil Falcinelli.

https://github.com/basil00/Gull

Just for the record, Gull 3.1 is not a basil forked.
It is all possible equal to the project of ThinkingALot,
Nor do I think there are differences of game between the twos versions.

https://github.com/Velmarin/Chess-Gull-Syzygy/releases

[THyer]

Thanks. This is very good news; it exceeds my expectations.

[THyer]

"Wobble" is an idea I am experimenting with, to change the move ordering a little bit based on the depth. The idea is that each iterative search will have a chance to find a move that the previous iteration missed. I hope this might be useful at long time control.

If you are able to test Wobble=1 against Wobble=0 for any significant number of games, I'd be interested to know how it does.

Btw, Roc 0.1 has Wobble=1 hardcoded, Roc 0.2 has Wobble=0 as the default.

[peter]

"Wobble" is an idea I am experimenting with, to change the move ordering a little bit based on the depth. The idea is that each iterative search will have a chance to find a move that the previous iteration missed. I hope this might be useful at long time control.

Thanks again for explaining. Before I'd do Celo- comparison by eng-eng, I'd like to see some Time to Depth, Time to Solution and Time to Eval- changes in certain test positions.
So to get you fully right: the higher Wobble is the lower "selectivity" of search