Which is the maddest, craziest engine?

[Graham Banks]

Is there a UCI version of Junior?

Next release apparently.

[Kaj Soderberg]

Which is the maddest, craziest engine?

It must be stable and usable for infinite analysis within ChessBase; so probably UCI, preferably not WB.

I have all the strong engines I want: Rybka, Zappa, Shredder, Hiarcs...

Now I want something with its own logic and very individual playing style.

Not too weak, just too wild.

Chess Tiger 2007, with Gambit Aggressive playing style.

Awesome, but sometimes positionally dubious. My favourite for fireworks.

Cheers,

Kaj

[playjunior]

I would say that later versions of Junior are rather crazy too

Is there a UCI version of Junior?

I think he was asking for an engine that would be stable under CB GUI, and UCI was an optional requirement

[Ovyron]

we should not forget Chessmaster(The King) engine, that can be parameterized to produce personalities with amazing (attacking) styles!

Is it allowed? Then I've got to mention Pro Deo as well, since you can also produce these kinds of personalities (try [Attractiveness = 300] for some mindbogglingly games!) and it plays more human like

[Erik Roggenburg]

I would say that later versions of Junior are rather crazy too

Is there a UCI version of Junior?

No, but that's OK, since the OP is using Chessbase.

[Marek Soszynski]

Which is the maddest, craziest engine?

It must be stable and usable for infinite analysis within ChessBase; so probably UCI, preferably not WB.

I have all the strong engines I want: Rybka, Zappa, Shredder, Hiarcs...

Now I want something with its own logic and very individual playing style.

Not too weak, just too wild.

Thanks for the responses.

Some of the engines suggested won't work as analysis engines within ChessBase. Others require special settings (which in my experience can't be saved reliably by ChessBase).

At the moment my wants are satisfied by Junior 10.1, which is well known, and by Bas Hamstra's Tao 5.6 http://wbec-ridderkerk.nl/html/details/Tao.html although the latter dates from March 2004. Meanwhile I look forward to OliThink becoming UCI.

[Ovyron]

Some of the engines suggested won't work as analysis engines within ChessBase. Others require special settings (which in my experience can't be saved reliably by ChessBase).

Perhaps you could consider getting a GUI that does this correctly, such as the Shredder (Classic) GUI. If Chessbase can't handle personalities correctly, it's not the fault of the engines.

[OliverBr]

At the moment my wants are satisfied by Junior 10.1, which is well known, and by Bas Hamstra's Tao 5.6 http://wbec-ridderkerk.nl/html/details/Tao.html although the latter dates from March 2004. Meanwhile I look forward to OliThink becoming UCI.

Looks as finally you got it:) OlIThink(UCI) since 5.11.9

[pohl4711]

https://www.sp-cc.de/patricia_eas_engine.htm

"Patricia is brilliant" - Ed Schroeder (Computerchess legend, author of Rebel engine and famous chesscomputers (Mephisto MM IV, Polgar, Milano, Risc and many more!))

"I am checking games with Patricia engine. It's totally crazy! I haven't seen any engine play like this" - GM Vidit Gujrathi (world ranking #26, Indian Chess Olympiad gold medalist in 2024), 2025/07/27 on Lc0-discord

And mention, Patricia 5 is much stronger, than all the other engines, which were recommended here. In my testings, Patricia 5 is around the strength of Stockfish 11 (!!!)

Here an example from my Patricia 5 testrun, 6 moves UHO-opening, white is better, 3min+1sec singlethread:

[pgn]
[Event "UHO Ratinglist"]
[White "Patricia 5.0 avx512"]
[Black "Caissa 1.12 avx2"]
[Site ""]
[Round "30"]
[Annotator "IWS-Tool: 5+ PawnUnits Sacrifice found in this game"]
[Result "1-0"]
[Date "2025.07.31"]
[PlyCount "55"]
[TimeControl "180+1"]

1. d4 Nf6 2. Bf4 g6 3. Nc3 Bg7 4. e4 d6 5. Qd2 Nc6 6. O-O-O O-O 7. h4 a6 8. h5 Nxh5 9. Bh6 Bxd4 10. Nge2 Bf6 11. Nd5 Ne5 12. Nxf6+ Nxf6 13. Ng3 Re8 14. Be2 Neg4 15. Bxg4 Bxg4 16. f3 Be6 17. Bg7 Kxg7 18. Qh6+ Kg8 19. e5 d5 20. Rde1 d4 21. Nf5 gxf5 22. Qg5+ Kf8 23. Rxh7 Nxh7 24. Qh6+ Kg8 25. Rh1 f6 26. Qg6+ Kf8 27. Rxh7 fxe5 28. Qg7# 1-0
[/code][/pgn]

[Dann Corbit]

I would like to see an engine with a UCI setting to castle opposite and pawn storm whenever possible.
That would be a blast.