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Post  kramnik on Mon Mar 09, 2020 6:59 pm

CorChess: Updated March, 9 2020.
FOR WINDOWS 64BIT ONLY!

Changelog: CorChess 5.1 2020-03-05.

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Post  Vikas on Thu Mar 12, 2020 12:05 am

Sir can I get strong engine for Android.

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Post  kramnik on Thu Apr 09, 2020 8:12 am

CorChess: Updated Avril, 9 2020.
FOR WINDOWS AND ANDROID, NO LINUX OR MACOS.


Changelog: CorChess 6.0.

This edition includes:

Windows:

- CorChess 6.0 070420 x64 BMI2.exe for Haswell CPUs
- CorChess 6.0 070420 x64 modern.exe for modern computers
- CorChess 6.0 070420 x64.exe for standard 64-bit CPUs
- CorChess 6.0 070420 x64 general.exe for general 64 bit Windows systems
- CorChess 6.0 070420 x64 ppc.exe for power computers hosting Windows systems 64 bit (Population Count algorythm included)
- CorChess 6.0 070420 32bit.exe for 32bit Windows systems
- CorChess 6.0 070420 32bit general.exe for general 32bit Windows systems
- CorChess 6.0 070420 32bit old.exe for old machines having 32bit Windows systems
- CorChess 6.0 070420 32bit ppc.exe for power computers hosting 32bit Windows systems

Android:

- CorChess 6.0 050420 arm7 pgo for 32bit Android systems
- CorChess 6.0 050420 arm8 pgo for 64bit Android systems


Windows exeutables compiled by Pavel C., Android binaries compiled by Alex1976 (OutSkirts forum).

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Post  kramnik on Thu Apr 16, 2020 1:59 pm

CorChess: Updated Avril, 16 2020.
FOR WINDOWS AND ANDROID, NO LINUX OR MACOS.


Changelog: ???

This edition includes:

Windows:

- CorChess 6.0 140420 x64 BMI2.exe for Haswell CPUs
- CorChess 6.0 140420 x64 modern.exe for modern computers
- CorChess 6.0 140420 x64.exe for standard 64-bit CPUs
- CorChess 6.0 140420 x64 general.exe for general 64 bit Windows systems
- CorChess 6.0 140420 x64 ppc.exe for power computers hosting Windows systems 64 bit (Population Count algorythm included)
- CorChess 6.0 140420 32bit.exe for 32bit Windows systems
- CorChess 6.0 140420 32bit general.exe for general 32bit Windows systems
- CorChess 6.0 140420 32bit old.exe for old machines having 32bit Windows systems
- CorChess 6.0 140420 32bit ppc.exe for power computers hosting 32bit Windows systems

Android:

- CorChess 6.0 080420 arm7 pgo for 32bit Android systems
- CorChess 6.0 080420 arm8 pgo for 64bit Android systems


Windows exeutables compiled by Pavel C., Android binaries compiled by Alex1976 (OutSkirts forum).

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Post  Buknoy on Fri May 01, 2020 11:02 pm

hello. may i request for the links of the previous versions of corchess? because only the latest one is available on the website. thank you so much

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Post  kramnik on Sat May 02, 2020 4:54 am

I guess you should look for them here: https://chessengines.blogspot.com/?m=1

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Post  kramnik on Wed May 06, 2020 10:21 pm

CorChess: Updated May, 7 2020.
FOR WINDOWS AND ANDROID, NO LINUX OR MACOS.

Changelog: Penalty for all enemy pawns xrayed by our bishop.

On the OutSkirtS forum Skynet has made a tournament between various Android engines, this one resulted the strongest.

Compiled by Ivan Ivec and Skynet.


This edition includes:

Windows:

- CorChess 6.0 060520 x64 BMI2.exe for Haswell CPUs
- CorChess 6.0 060520 x64 modern.exe for modern computers
- CorChess 6.0 060520 x64.exe for standard 64-bit CPUs

Android:

- CorChess 6.0 030520 arm7 pgo for 32bit Android systems
- CorChess 6.0 030520 arm8 pgo for 64bit Android systems


Windows exeutables compiled by Ivan Ivec, Android binaries compiled by Skyned (OutSkirts forum).

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Post  kramnik on Tue May 26, 2020 6:02 pm

CorChess: Updated May, 7 2020.
FOR WINDOWS AND ANDROID, NO LINUX OR MACOS.

Changelog:

- Queen Mobility Tweak
- Remove and replace DoubledIsolated penalty by Doubled



Compiled by Ivan Ivec and Skynet.


This edition includes:

Windows:

- CorChess 250520 x64 BMI2.exe for Haswell CPUs
- CorChess 250520 x64 modern.exe for modern computers
- CorChess 250520 x64.exe for standard 64-bit CPUs

Android:

- CorChess 230520 arm7-pgo for 32bit Android systems
- CorChess 230520 arm8-pgo for 64bit Android systems


Windows exeutables compiled by Ivan Ivec, Android binaries compiled by Skyned (OutSkirts forum).

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Post  twobeer on Sat May 30, 2020 4:26 am

Why Android builds and no Linux builds?

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Post  kramnik on Sat May 30, 2020 9:40 am

twobeer wrote:Why Android builds and no Linux builds?

Because I'm still not at home because of coronavirus, sorry. I'll be back in early June. I thank the Lord for having been safe from this plague.

When I'll be in Varese you'll have my compilings again, with BMI2 and Linux.

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Post  leavenfish on Sat May 30, 2020 1:42 pm

Say, it's really hard to find any real info about this engine. I know it is Stockfish tweaked "for Correspondence and Slow time controls"/analysis. But are the default settings optimal for that, ex:

Analysis Contempt - BOTH (I always heard 'off' was the more correct option for analysis...or at least a lot less than 24)

I basically am using it in Chessbase as I have the engine on as I go to critical points in games/openings and start searching for ideas....letting the engine run say for 15 min to 1 hr or in some program (like Chess Position Trainer) that goes to the end of a tree and works back - backsolving - slowly to get an idea of which move is truly best early on in the tree.

Any opinions on this would be greatly appreciated.

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Post  kramnik on Sat May 30, 2020 5:45 pm

For the precise task you mentioned I guess Cfish is a better solution. Or, if you have at least a Xeon machine, the latest Stockfish beta with contempt set to 0. Komodo is also very good to analyse positions.

leavenfish wrote:Say, it's really hard to find any real info about this engine. I know it is Stockfish tweaked "for Correspondence and Slow time controls"/analysis. But are the default settings optimal for that, ex:

Analysis Contempt - BOTH (I always heard 'off' was the more correct option for analysis...or at least a lot less than 24)

I basically am using it in Chessbase as I have the engine on as I go to critical points in games/openings and start searching for ideas....letting the engine run say for 15 min to 1 hr or in some program (like Chess Position Trainer) that goes to the end of a tree and works back - backsolving - slowly to get an idea of which move is truly best early on in the tree.

Any opinions on this would be greatly appreciated.

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Post  leavenfish on Sat May 30, 2020 8:12 pm

kramnik wrote:For the precise task you mentioned I guess Cfish is a better solution. Or, if you have at least a Xeon machine, the latest Stockfish beta with contempt set to 0. Komodo is also very good to analyse positions.

leavenfish wrote:Say, it's really hard to find any real info about this engine. I know it is Stockfish tweaked "for Correspondence and Slow time controls"/analysis. But are the default settings optimal for that, ex:

Analysis Contempt - BOTH (I always heard 'off' was the more correct option for analysis...or at least a lot less than 24)

I basically am using it in Chessbase as I have the engine on as I go to critical points in games/openings and start searching for ideas....letting the engine run say for 15 min to 1 hr or in some program (like Chess Position Trainer) that goes to the end of a tree and works back - backsolving - slowly to get an idea of which move is truly best early on in the tree.

Any opinions on this would be greatly appreciated.

Why Cfish and not Corchess?
I've downloaded Cfish in the past, but never really gave it much of a shot. I'll check it out but my first thought was that Corchess would be good for letting chew on some positions.

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Post  kramnik on Sun May 31, 2020 4:15 am

Please try it and let me know.

https://chess.massimilianogoi.com/download/cfish/

leavenfish wrote:Why Cfish and not Corchess?
I've downloaded Cfish in the past, but never really gave it much of a shot. I'll check it out but my first thought was that Corchess would be good for letting chew on some positions.

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Post  leavenfish on Sun May 31, 2020 12:55 pm

kramnik wrote:Please try it and let me know.

https://chess.massimilianogoi.com/download/cfish/

leavenfish wrote:Why Cfish and not Corchess?
I've downloaded Cfish in the past, but never really gave it much of a shot. I'll check it out but my first thought was that Corchess would be good for letting chew on some positions.

Well, again, you are making a claim...but not saying 'why'. That is what I am most interested in - why one is more suitable than another.

Now, I never found anything searching the web, but did find some useful...maybe it was just 'bickering' between people early on in this thread.
One find Corrchess more 'precise', but slow, another finds Cfish quicker but 'erratic'. General stuff though.

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Post  kramnik on Sun Jun 07, 2020 8:35 pm

Cfish is more precise on my two computers: an Intel and an AMD, so I can tell it could be better for such tasks.

leavenfish wrote:
kramnik wrote:Please try it and let me know.

https://chess.massimilianogoi.com/download/cfish/

leavenfish wrote:Why Cfish and not Corchess?
I've downloaded Cfish in the past, but never really gave it much of a shot. I'll check it out but my first thought was that Corchess would be good for letting chew on some positions.

Well, again, you are making a claim...but not saying 'why'. That is what I am most interested in - why one is more suitable than another.

Now, I never found anything searching the web, but did find some useful...maybe it was just 'bickering' between people early on in this thread.
One find Corrchess more 'precise', but slow, another finds Cfish quicker but 'erratic'. General stuff though.

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Post  kramnik on Sun Jun 07, 2020 8:40 pm

CorChess: Updated June, 8 2020.
For Windows, Linux and Android, NO MACOS!

Changelog:

- Singular quiet LMR
- Minimal thinking time, even if only one rootMove.
- small speed-up in movegen
- Use lowply-history also on low depths.



This edition includes:

Windows:

- CorChess 6.0 070620 x64 BMI2.exe for 64bit Windows systems and Intel processors
- CorChess 6.0 070620 x64 general.exe for general 64bit Windows systems
- CorChess 6.0 070620 x64 modern.exe for modern machines on a 64bit Windows system (uses popcnt asm-instruction)
- CorChess 6.0 070620 x64 ppc.exe uses popcnt asm-instruction on a 64bit Windows system
- CorChess 6.0 070620 x64.exe for 64bit Windows systems

- CorChess 6.0 070620 32bit general.exe for general 32bit Windows systems
- CorChess 6.0 070620 32bit old.exe for old cpus on a 32bit Windows system
- CorChess 6.0 070620 32bit ppc.exe uses popcnt asm-instruction on a 32bit Windows system
- CorChess 6.0 070620 32bit.exe for 32bit Windows systems


Linux:

- CorChess 6.0 070620 x64 BMI2 for 64bit Linux systems and Intel processors
- CorChess 6.0 070620 x64 general for general 64bit Linux systems
- CorChess 6.0 070620 x64 modern for modern machines on a 64bit Linux system (uses popcnt asm-instruction)
- CorChess 6.0 070620 x64 ppc uses popcnt asm-instruction on a 64bit Linux system
- CorChess 6.0 070620 x64 for 64bit Linux systems

- CorChess 6.0 070620 32bit general for general 32bit Linux systems
- CorChess 6.0 070620 32bit old for old cpus on a 32bit Linux system
- CorChess 6.0 070620 32bit ppc uses popcnt asm-instruction on a 32bit Linux system
- CorChess 6.0 070620 32bit for 32bit Linux systems


Android:

- Cor-310520-arm7-pgo for 32bit Android systems
- Cor-310520-arm8-pgo pgo for 64bit Android systems


Android compile provided by Skynet.

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Post  kramnik on Mon Jun 15, 2020 8:07 am

CorChess: Updated June, 15 2020.
For Windows, Linux and Android (NOT UPDATED), NO MACOS!

Changelog:

- Adjust history threshold for quiet moves futility pruning
- Quantize eval to multiples of 16
- Tuned values for search constants

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Post  kramnik on Wed Jun 17, 2020 12:21 am

Android version updated.

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Post  Tal74 on Mon Jun 22, 2020 4:50 am

kramnik wrote:CorChess: Updated June, 15 2020.
For Windows, Linux and Android (NOT UPDATED), NO MACOS!

Changelog:

- Adjust history threshold for quiet moves futility pruning
- Quantize eval to multiples of 16
- Tuned values for search constants


Thanks, but unfortunately does not work with some older processors (Athlon 2800+) and operating systems, even a version CorChess 6.0 150620 32bit old.exe , does not work...(if possible, please fix this problem/compile) Btw., version/compile from abrok.eu (32-bit) works without problems... (also Sugar and MZ compiles)

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Post  kramnik on Fri Jun 26, 2020 7:56 am

CorChess: Updated June, 26 2020.

Changelog:

- Small cleanups
- Make endgames consistent
- Introduce bonus for queen infiltration


This is a non-aligned update: the Windows executables are compiled by Ivan Ivec, the Android binaries by Skynet while the Linux ones are compiled by me but they are not updated, as I am out of home again. Only the Linux binaries are not updated; I've preferred to keep them as I want that most people possible can find chess software for their devices; if I avoided to include them the Linux users would have been cut out.

This edition includes:

Windows (64BIT ONLY):

- CorChess 220620 x64 BMI2.exe for Haswell CPUs
- CorChess 220620 x64 modern.exe for modern computers
- CorChess 220620 x64.exe for standard 64-bit CPUs

Linux:

- CorChess 6.0 150620 x64 BMI2 for 64bit Linux systems and Intel processors
- CorChess 6.0 150620 x64 general for general 64bit Linux systems
- CorChess 6.0 150620 x64 modern for modern machines on a 64bit Linux system (uses popcnt asm-instruction)
- CorChess 6.0 150620 x64 ppc uses popcnt asm-instruction on a 64bit Linux system
- CorChess 6.0 150620 x64 for 64bit Linux systems

- CorChess 6.0 150620 32bit general for general 32bit Linux systems
- CorChess 6.0 150620 32bit old for old cpus on a 32bit Linux system
- CorChess 6.0 150620 32bit ppc uses popcnt asm-instruction on a 32bit Linux system
- CorChess 6.0 150620 32bit for 32bit Linux systems

Android:

- Cor-220620-arm7-pgo for 32bit Android systems
- Cor-220620-arm7-pgo for 64bit Android systems


Windows exeutables compiled by Ivan Ivec, Linux binaries compiled by me, Android binaries compiled by Skynet.

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Post  kramnik on Wed Jul 22, 2020 10:40 pm

CorChess: Updated July, 23 2020.

Changelog: Update evaluate.cpp


This edition includes:


Windows:

- CorChess 6.0 230720 x64 BMI2.exe for 64bit Windows systems and Intel processors
- CorChess 6.0 230720 x64 general.exe for general 64bit Windows systems
- CorChess 6.0 230720 x64 modern.exe for modern machines on a 64bit Windows system (uses popcnt asm-instruction)
- CorChess 6.0 230720 x64 ppc.exe uses popcnt asm-instruction on a 64bit Windows system
- CorChess 6.0 230720 x64.exe for 64bit Windows systems

- CorChess 6.0 230720 32bit general.exe for general 32bit Windows systems
- CorChess 6.0 230720 32bit old.exe for old cpus on a 32bit Windows system
- CorChess 6.0 230720 32bit ppc.exe uses popcnt asm-instruction on a 32bit Windows system
- CorChess 6.0 230720 32bit.exe for 32bit Windows systems

Android:

- Cor-200720-arm7-pgo for 32bit Android systems
- Cor-200720-arm8-pgo pgo for 64bit Android systems


Android binaries compiled by Skynet.

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Post  kramnik on Mon Aug 17, 2020 8:09 pm

CorChess: Updated August, 18 2020.

For Windows and Android and Linux, NO MACOS!

Changelog: Use NNUE more for fortresses.

READ INSTRUCTIONS ON MY SITE.

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Post  kramnik on Thu Sep 24, 2020 7:21 pm

CorChess: Updated September, 25 2020.
For Windows, Android and Linux, NO MACOS!

Changelog: Merge pull request #1317 from IIvec/master_clean.

Compiled with MSYS2 for Windows, with GCC for Linux on Linux Mint, with NDK on Linux Mint for Android.

This edition includes:

Windows:

- CorChess NNUE 1.3 240920 x64 BMI2.exe for 64bit Windows systems and Intel processors
- CorChess NNUE 1.3 240920 x64 AVX2.exe for 64bit Windows systems and AMD processors
- CorChess NNUE 1.3 240920 x64 general.exe for general 64bit Windows systems
- CorChess NNUE 1.3 240920 x64 modern.exe for modern machines on a 64bit Windows system (uses popcnt asm-instruction)
- CorChess NNUE 1.3 240920 x64 ppc.exe uses popcnt asm-instruction on a 64bit Windows system
- CorChess NNUE 1.3 240920 x64.exe for 64bit Windows systems

- CorChess NNUE 1.3 240920 32bit general.exe for general 32bit Windows systems
- CorChess NNUE 1.3 240920 32bit ppc.exe uses popcnt asm-instruction on a 32bit Windows system
- CorChess NNUE 1.3 240920 32bit.exe for 32bit Windows systems
- CorChess NNUE 1.3 240920 32bit sse2.exe
- CorChess NNUE 1.3 240920 32bit sse41-ppc.exe

Linux:

- CorChess NNUE 1.3 240920 x64 BMI2 for 64bit Linux systems and Intel processors
- CorChess NNUE 1.3 240920 x64 AVX2 for 64bit Linux systems and AMD processors
- CorChess NNUE 1.3 240920 x64 general for general 64bit Linux systems
- CorChess NNUE 1.3 240920 x64 modern for modern machines on a 64bit Linux system (uses popcnt asm-instruction)
- CorChess NNUE 1.3 240920 x64 ppc uses popcnt asm-instruction on a 64bit Linux system
- CorChess NNUE 1.3 240920 x64 for 64bit Linux systems

- CorChess NNUE 1.3 240920 32bit general for general 32bit Linux systems
- CorChess NNUE 1.3 240920 32bit ppc uses popcnt asm-instruction on a 32bit Linux system
- CorChess NNUE 1.3 240920 32bit for 32bit Linux systems
- CorChess NNUE 1.3 240920 32bit sse2
- CorChess NNUE 1.3 240920 32bit sse41-ppc

Android:

- CorChess NNUE 1.3 240920 32bit for 32bit Android systems
- CorChess NNUE 1.3 240920 32bit-neon for 32bit neon Android systems
- CorChess NNUE 1.3 240920 64bit Android systems

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Post  kramnik on Sun Oct 11, 2020 7:56 am

CorChess: Updated October, 11 2020.
For Windows, Android and Linux, NO MACOS!

Changelog: Merge pull request #1317 from IIvec/master_clean.

WARNING: YOU MUST USE ANY OF THESE BINARY IN ASSOCIATION WITH nn-baeb9ef2d183.nnue IN THE SAME FOLDER. ANDROID USERS MUST PUT BOTH THE PROGRAM AND nn-baeb9ef2d183.nnue IN THE FOLDER Droidfish/uci.

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