Shannon Type B chess engines

[MMoisan]

Do you know engine using the "Type-B" strategy ( https://chessprogramming.wikispaces.com/Type+B+Strategy ) ?

In the list given in the link above, only "Chess Simulator" can be run on a PC.

I would be curious to play against these program to see if they play more "like a human".

[bob]

Do you know engine using the "Type-B" strategy ( https://chessprogramming.wikispaces.com/Type+B+Strategy ) ?

In the list given in the link above, only "Chess Simulator" can be run on a PC.

I would be curious to play against these program to see if they play more "like a human".

Almost all programs fit that definition to some degree. For example, we selectively extend "interesting" variations, we selectively reduce "uninteresting" variations, and we use forward-pruning in the last few plies to throw away moves that appear to be pointless...

[mclane]

Mark V was later continued as cyrus 68k on pc. After Levy Participated with it on tournaments the dedicated chess Computer cxg Sphinx appeared on Stage. This is Nearly a mark v not running on a 6502 but on a 68000 CPU with the Cyrus 68k program.

https://chessprogramming.wikispaces.com/Cyrus+68K

[Jimbo I]

Jim Ablett released a console-only version of Awit for the PC a while back. The thread is here:

http://www.talkchess.com/forum/viewtopi ... =0&t=33305

And the download is here:

http://kirr.homeunix.org/chess/engines/ ... lett/AWIT/

I haven't played with it much; I couldn't get it to think for more than a second or so. Maybe on modern PCs it only takes that long to go to the original ply depths. Or maybe I just didn't read the documentation well enough...

[vittyvirus]

Do you know engine using the "Type-B" strategy ( https://chessprogramming.wikispaces.com/Type+B+Strategy ) ?

In the list given in the link above, only "Chess Simulator" can be run on a PC.

I would be curious to play against these program to see if they play more "like a human".

I started chessprogramming thinking to implement a type B strategy. But that makes your engine to blunder a lot.

[MMoisan]

Thank you!

I was able to change the settings to have AWIT thinking longer (when it be out of its book):

I typed the following commands:

?6

0 0 0 0

?T

T

AWIT should be in tournament mode now. In the second step, it is possible to put some other values like "3000 10 0 30" (they affect the search tree). With this parameters AWIT thinks about a minute per move on my C2D.

AWIT can play some interesting chess, but I don't think it is very strong, especially tactically. In this game, AWIT gives away a knight at move 20:

[Date "2014.07.22"]
[Round "?"]
[White "MM"]
[Black "AWIT"]
[Result "1-0"]
[ECO "A02"]
[PlyCount "67"]
[TimeControl "1200"]

1. f4 Nf6 2. g3 Nc6 3. Bg2 d5 4. Nf3 Bd7 5. O-O
g6 6. d3 Bg7 7. Qe1 O-O 8. e4 dxe4 9. dxe4 Qc8 10. Nc3 Bh3 11. e5 Bxg2 12. Kxg2
Nh5 13. Be3 Rd8 14. a3 f5 15. Qe2 a6 16. Qc4+ e6 17. Ng5 Re8 18. b4 Bh6 19. h4
Qd7 20. Rfd1 Nxe5 21. fxe5 Qc8 22. Rd2 Kg7 23. Rad1 b5 24. Rd7+ Kg8 25. Qc6 Qb8
26. Rxc7 Bxg5 27. Bxg5 h6 28. Bf6 Nxf6 29. exf6 Rf8 30. Qxe6+ Kh8 31. Rh7+ Kxh7
32. Qe7+ Rf7 33. Qxf7+ Kh8 34. Qg7# 1-0

Nonetheless, it is fun to have the chance to play against a giant from the past!

[Jimbo I]

Thanks for the commands, Marc. I was hoping that I just hadn't read the instructions closely enough.

Also, you previously mentioned Chess Simulator, so I assume you know that you can download Chess Player 2150 from Ed Schroeder's site and install it in DosBox?

[mclane]

thanks marc.

[mclane]

tony marsland claims that awit computes 8 NPS.

thats much related with Mephisto III by nitsche+henne.

mephisto III, a commercial dedicated chess computer with 6.1 mhz is doing 1-2 NPS.