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Nirvanachess

descriptionNirvanachess EmptyNirvanachess

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http://nirvanachess.blogspot.com/

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Nirvanachess 1.1

-64 Bit Compile
-Now 10%-20% faster in terms of nodes per second
-Hash move is now "Free" (No move generation necessary)
-Fixed many bugs in the Evaluation function
-More Extensions, more reductions overall reaches 2-4 ply deeper under the same time controls.
-About 200 Elo stronger than version 1.0
-Various other small bug fixes

Download Link:
64 bit
mega.co.nz #!eZojwJiK!A-oZ5gLVAmimzX3ddXZTfBtMwck0U_lwrnQ2FltLbE8

32 bit
mega.co.nz #!GEgDwS7C!SXd9WGlYD8dHh5brl2eywmYwzzt0pp-1To11vcZ0RlY

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Nirvanaches v1.2 : http://nirvanachess.blogspot.com/

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Nirvanachess 1.3
http://nirvanachess.blogspot.com/2013/11/nirvanachess-13.html

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Nirvanachess 1.4
http://nirvanachess.blogspot.com/2014/01/what-is-new-in-this-release-strength.html

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Nirvanachess 1.5
http://nirvanachess.blogspot.com/

What is new in this release?

Strength Increase
About 50 Elo stronger than Version 1.4 at long time controls (60' + 0.05')
Better Time Management
Changed how much time was allocated for repeating time controls.
Should no longer have twice as much time as most opponents during the endgame
Better move ordering
So called "bad captures" are now ordered after killer moves
A bad capture is defined by a capture that captures a less valuable piece that is defended by a pawn.
Changed move ordering at root
Now previous best moves are kept closer to the front of the move list
Will no longer "throw out" a fail high at root when out of time
Evaluation Tweaks
Increased the speed at which doubled pawns are detected
Slightly optimized king safety values
Optimized pawn chain values
Pawn chains were previously highly overvalued
More Pruning
Improved both futility and razoring values
Added more pruning in Qsearch for non-discocheck moves
More null move pruning
The better the current position the pruning will occur
Bad captures are now able to be futility pruned
More aggressive aspiration search window
Bug Fixes
Fixed a bug with pawnstorms
Previously the least advanced pawn on a file was considered to be the storming pawn


Download Link:
mediafire.com download/652c6i6tl7l1lu8/Nirvanachess_1.5.rar

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Nirvanachess 1.6
mediafire.com download/fcdz82s1g2tr9lp/Nirvanachess1.6.rar

Strength Increase
About 40 Elo stronger than Version 1.5 at long time controls (60' + 0.05')

Evaluation Tweaks
Added knowledge of KR vs KP endings
Passed Pawn evaluation is smoothed out between mid and endgame.

Optimization
Slightly quicker during the mid and end games (~2%)

Bug Fixes
Fixed a bug with pawnstorms
Sometimes would count pawnstorms twice
Fixed a bug with pawn shelter
Sometimes would count shelter pawns twice
Fixed a bug that would cause pawns to be completely mis-evaluated.

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From the author:

Nirvanachess 1.7 has been released.

Full details can be found at http://nirvanachess.blogspot.com/

As with the previous release there are 2 compiles found within the .rar file. One file is a 64 bit compile, one is a 32 bit compile.

Since Microsoft is no longer supporting Windows xp, I decided to stop supporting it too. There haven't been too many changes since the last version but I have finally gotten clop to behave properly so a few parameters have been cloptimized. I also noticed a few crashes during my last few batches of testing but I think I have narrowed it down and fixed it.

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Nirvanachess 1.8
http://nirvanachess.blogspot.com/2014/08/nirvanachess-18-release.html

descriptionNirvanachess EmptyNirvana MP

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Nirvana ... multi cores ... 2.0 released ... best

mediafire.com download/1rjqib15j5ce367/Nirvanachess+2.0.rar

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It seems to me that this Nirvanachess 2.0 with problems ... not I do run all cores that have ... AMD Phenom IIx6 ... when I put 6 cores, it works only with 30% of capacity, I hope the author can make a fix release soon ... it seems to me to be a very competent engine ... hug ...

descriptionNirvanachess EmptyNirvanachess 2.0

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This engine seems to have a nice increase in strength but unfortunately It crashes. Really looking forward to a correction. Thanks

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I want to make a little bit of my indignation, with respect to AMD processors, ... as we suffer about it ... it seems that every programmer only has eyes for INTEL, AMD ... and is left a little hand ... some good engines like Nirvanachess, firenzina, .. were made just for intel .. thankfully there are some good-hearted people who can make compilations for AMD and help us ... I would love to be able to Nirvanachess put in my private tournament ... but contempt for AMD, .. it is difficult able to do it. Did the new reupload yesterday nirvana, .. and the problem continues, .. just does not load the multi processing, ... a big hug to the author, that might help us ... best (amd phenom II x6)

descriptionNirvanachess EmptyNirvanachess

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When the corrected version is available if the author could call it 2.1 that would be nice, because Fritz 14 or 12 will not rename it. It will  say "Nirvanachess 2.0 already exist" so CB GUIs would have to wait until the next version appears if it is not renamed. Thanks

Last edited by sharpov on Thu Dec 18, 2014 7:41 pm; edited 1 time in total (Reason for editing : Mispelled)

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I agree with you sharpov to an extent gender and number ... best

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last correction, seems to be working well in Bill Fritz best ....

mediafire.com download/y718i2waog74by9/Nirvanachess+2.0a.rar

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last correction, seems to be working well in Gui Fritz best ....sorry (Bill,... is Gui)

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Thanks, and thanks for renaming it also!

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@mcdiniz wrote:
last correction, seems to be working well in Bill Fritz best ....

mediafire.com download/y718i2waog74by9/Nirvanachess+2.0a.rar


Having problems with that file. Can you possibly download it elsewhere. thanks

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Nirvanachess 2.1
http://nirvanachess.blogspot.com/

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Strenght Graham!?

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3150 elo?

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@chess-forever wrote:
Strenght Graham!?


Around 3050 on the CCRL 40/40 1CPU list.
Please note that the latest exe should be 2.1c.

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Thank you Graham

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This engine shows a lot of promise. It can hold its own even against the top engines in 1 minute games. The only problem is once in a while it losses on time but usually when it is lost, otherwise this engine is making REAL progress! Good Job!

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