Difficult test suites

[cc2150dx]

What the best engine for solving difficult test suites ?

[Jouni]

Rems/Leptir by EN for sure.

[Dann Corbit]

I agree with Jouni.
For specialized problems, some engines and solvers have an edge.
Chest can solve short mate problems faster than other engines (e.g. mate in 7 or less, Chest will be hard to beat).
Sting is good for certain categories of problems. But don't go far over 16 threads because it actually runs slower.
Crystal 5 is also very good and a valuable second opinion.

[cc2150dx]

Thanks Dan and Jouni. Dan, what's your opinion on The Huntsman ? Where can I download Rems/Leptir from ?

[Dann Corbit]

Thanks Dan and Jouni. Dan, what's your opinion on The Huntsman ? Where can I download Rems/Leptir from ?

The Huntsman is a great mate solver and tactician, but it plays terrible chess in games. Which is fine, that is not its purpose.

Rems/Leptir and other tactical engines are from Eduard's site, but he closed his site down. Sometimes he posts links to engines on OpenChess

[Dann Corbit]

Here is one version of Leptir:
I sometimes fiddle with the source code and I don''t know if I fiddled with this version or not.

[Werewolf]

There's a special version of Black Diamond which is very good - years ago since I used it.

Also, if you want high strength and tactical prowess in one package, and you don't mind paying for a short period - the Stockfish Cluster is good at high (2048 IIRC) thread counts which can be rented.

[Damir]

[d]1k5r/pPpP2p1/P1P3P1/8/8/Qp6/1P6/K6N w - - 3 17

[Damir]

What is the best move for White in this position?

[peter]

[d]1k5r/pPpP2p1/P1P3P1/8/8/Qp6/1P6/K6N w - - 3 17

That's reached from two versions of a study from 1937 by T.Gorgiev.

https://www.yacpdb.org/#search/MWsxcjRc ... MS8xLzA=/1

and

https://www.yacpdb.org/#search/MWsxcjRc ... LzEvMS8w/1

From both of them, from one after 2 and from the other one after 3 moves the position of the diagram's reached, regards