GO to Zarkon Fischer's Free Chess Programs then go to the front page look the latest news an see how to down load the Rybka 2.3.2a uci chess engine for FREE. Rybka 3 is only 70 points stronger an Naum 4 only about 4 points stronger according to Ccrl ratings.

Thanks :)

Speaking of Rybka, I'd love to get the latest Rybka engine so I can add it to my Deep Fritz 11 software... is that possible?

I prefer the toned down fritz 6 that comes with chessbase light.  Paradoxilly, I find rybkas analysis TOO good.  First and foremost, it's discouraging how GOOD the engine is.  It makes me want to say "screw it", and watch it's analysis with glazed eyes.  Phychological hurdle there.

But the main reason I don't like rybka is because I simply don't understand it's analysis.  It will say some magical moves, and then a few moves later black/white is winning, and I don't understand how I got there.  Fritz on the other hand is a complete duffer compared to rykba, but I understand the engine better, and know WHY his moves are good moves.

No comparison as engines between rybka and CM. CM is wayyyy behind the curve here.

Use CM for its lessons, rybka for top-notch analysis.

Kerplow whats the difference between Fischer an Bisguier.That should tell you the gap between rybka2.3.2a an Chessmaster 11000.

Yes but to get the latest engine you would have to purchase it.  Only the earlier ones are free.

Borgqueen i have already loaded Rybka 2.3.2a to Arena  mayurachessboard  Infinitychess an yes Fritz 9 an Fritz 11  guis an it works great on all check the guest book on zarkons site to get tips on how to down load peska which is a geat free training program an in it is the Rybka 2.3.2a uci engine file you load this file into Fritz 11 an the other Gui platforms.By the way you will find on zarkons grat site links to download all rybka chess engines up thru rtbka 2.2n2p mutiple cpu chess engines.I now run about 10 rybka chess engines on Fritz 11 several stronger than the Fritz 11 engine talk about a cheap free way to up grade fritz 11.on Fitz i use fritzs openimg book however on zarkons site you will find a good link to a free rybka opening book.

Is the rybka opening book more complete or something?  I've downloaded Peshka now, so I'll check it out.  Adding a free Rybka to my Deep Fritz 11 sounds good... I'm not sure this free one would be stronger than Deep Fritz 11 though... would it?

Ah I see... I figured as much, but seeing as I just bought DeepFritz 11, I thought there may be some cheap purchase somewhere, but the engine even without the gui for Deep Rybka 3 is still over $100, so I guess I'll just have to wait and try out this free one :)   Thanks for the info though :)

BAH!

Ok so I downloaded it, found the engine and set it up in Deep Fritz 11.

Result:

Deep Fritz 11 engine looks at 3,000+ kilonodes per second.  Cool.

Rybka v2.3.2a.w32 engine looks at almost 90 kN/s. 

Not what I would say a worthwhile venture ^^

I guess I still have to wait for the Deep Rybka engines to fall in price.

Ok you have deep fritz 11 the souped up ver,now it may be a bit stronger than Rybka 2.3.2a as i think its the single cpu 32bit ver.I think  your fritz 11 is a 64 bit designed for the newest computers.However if you have a older computer or the regular fritz 11 then the free rybka 2.3.2a 32 bit is a good upgrade an even on your deep fritz adding a uci engine not designed for the newer computers not sure how it would work try it an see works great on a regular fritz 11 gui platform.now rtbka2.2n2p i think is released for free is a mutiple cpu uci engine which in the newer computers that are able to take advantage of it may check in a few points stronger than deep Fritz 11.

You can download Rybka 2.3.2 straight from the Rybka website, www.rybkachess.com. I wouldn't trust any other sites.

Yeah, as I said, I tried it and it works, but it's shockingly slow.  I'll just have to stick to DF11 for now, which I am quite happy with.  Just sometimes I'd like to get a second opinion :p

I wonder how Rybka 3 really compares with Deep Fritz 11.  Sometimes I think Rybka fans are a bit quick and sometimes thoughtless with the claims on how Rybka 3 is "much stronger" than D.Fritz 11.  Deep Rybka 3 might be, I dunno,  but I'd like to see a non-biased analysis comparing them :)

Well it runs on deep fritz now on my regular fritz 11 i find it much stronger than fritz 11. i have a cub blitz rating around 1950 to 2000.For everyone with a cheaper older computer then we are stuck with 32 bit however i think thats prob 75% off all computers in use its a big free upgrade.Play it on deep Fritz an post how strong compared to deep fitz in play you find it to be.

This is another free engine that works well (although on the site I think the author does not recommend the Chessbase GUIs):  http://www.glaurungchess.com/

In general Rybka is a little slower at getting where it is going.  I have Deep Rybka 3 and run it in the Shredder GUI and it can be a little slow.  I use Rybka when I really really want to dig into a position.  I think any of the other powerful engines such as Fritz 11 are going to give great answers.

I will go on record as saying that if you buy Rybka 3 directly from the Rybka website that they give GREAT customer support through there forum as does Shredder and Hiarcs through emails. (chessbase not so much..)

This is another engine that is free that has gotten high marks:  http://brightchess.googlepages.com/

It works great in the Shredder GUI.  I think it is cool to have a few engines to a) Play against and b) the will give different opinions sometimes when analyzing.  That can be fun to dig into to see which one you like best!

I think part of the strength of Rybka is its programed with more chess knowledge so while it may not crunch as many positions per sec as fitz it more than makes up with better positional etc general chess knowledge.I find you can trust zarkons wonderfull free chess programs site as i have downloaded most of the programs listed there.If your on a tight budget Then Free is your only option.

hey try The Twisted Logic Uci engine its free has a 32 bit single cpu strength of 2800 but plays in a very unique style for a chess engine try it you will love it,an yes glaurung is a great free engine also i like its style of play.

I am thinking of just biting the bullet and purchasing the Deep Rybka engine.... I am not hard up for money, so...

But I would really like to KNOW it's going to work properly (and fast) in my Deep Fritz 11 GUI.  I definitely don't want to pay $100 for a chess engine that goes 1/33rd of the speed I have now :p

I have heard about Rybka being built on a better "understanding" of chess, but I remain unconvinced of anything until I see something like an independant comparison.   I do know that with Deep Fritz 11, I still sometimes find positions that it analyses quite incorrectly until I hold it's hand and show it what it's missing, then all the numbers change and it gets it right.  When I do that and then return to the original position, all of a sudden it can see it.   I am hoping this won't happen with Deep Rybka 3.

Anyway, enough rambling from me.  Thanks for the link, I at least have a Rybka engine now, even if it is a little slow :p

Hi here is another nice free engine:

http://members.home.nl/matador/prodeo.htm