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Komodo 4 Initial Impression

Posted: Sun Jan 01, 2012 4:08 pm
by kingliveson
Komodo 4 first impression is that it's a little more aggressive, and a slight improvement over version 3. One thing noted immediately is the sudden death time management (at least at 1 minute) is very aggressive, and forces opponents to get into time trouble and lose.

The author posted on talkchess that komodo, paraphrasing, "has the most accurate evaluation of any chess program today" which I seriously doubt; if anything, it can be a bit inflated at times -- see attached screen-shot.

Image
Image

The more accurate a program evaluates a position, the fewer losses it is expected to produce. This is how evaluation is measured because chess is not yet solved. Right now, Komodo is close in strength to IvanHoe, so, it does not have the most accurate evaluation of current chess engines. Looking forward to the SMP release...

One wonders how this Komodo release would fair against IvanHoe 999964h (with updated time management) at long time control where it is said to do better. It would be surprising if Komodo comes out ahead.

Some sample head-to-head matches:






Re: Komodo 4 Initial Impression

Posted: Fri Jan 06, 2012 2:39 pm
by kingliveson
Not sure if this is a XBoard/POLYGLOT issue, but Komodo 4 lost a drawn game after 405 moves. The following errors showed up in terminal:

Code: Select all

xboard: POLYGLOT: write_buffer overflow: file "util.c", line 178
xboard: POLYGLOT: write_buffer overflow: file "util.c", line 178
xboard: POLYGLOT: write_buffer overflow: file "util.c", line 178
xboard: POLYGLOT: write_buffer overflow: file "util.c", line 178


Edit: It looks likely to be a Polyglot issue. Perhaps "StringSize" 4096 bytes needs to be 8192.

Re: Komodo 4 Initial Impression

Posted: Mon Feb 06, 2012 5:03 pm
by Carlos Ylich
Hello,
What is this interface are you using?
Thanks

Re: Komodo 4 Initial Impression

Posted: Tue Feb 07, 2012 12:54 am
by zullil
Carlos Ylich wrote:Hello,
What is this interface are you using?
Thanks
It appears to be Xboard.

Re: Komodo 4 Initial Impression

Posted: Tue Feb 07, 2012 3:47 am
by kingliveson
zullil wrote:
Carlos Ylich wrote:Hello,
What is this interface are you using?
Thanks
It appears to be Xboard.
That's right.

Re: Komodo 4 Initial Impression

Posted: Sat Feb 18, 2012 1:39 am
by notyetagm
kingliveson wrote:Komodo 4 first impression is that it's a little more aggressive, and a slight improvement over version 3. One thing noted immediately is the sudden death time management (at least at 1 minute) is very aggressive, and forces opponents to get into time trouble and lose.

The author posted on talkchess that komodo, paraphrasing, "has the most accurate evaluation of any chess program today" which I seriously doubt; if anything, it can be a bit inflated at times -- see attached screen-shot.

Image
Image

The more accurate a program evaluates a position, the fewer losses it is expected to produce. This is how evaluation is measured because chess is not yet solved. Right now, Komodo is close in strength to IvanHoe, so, it does not have the most accurate evaluation of current chess engines. Looking forward to the SMP release...

One wonders how this Komodo release would fair against IvanHoe 999964h (with updated time management) at long time control where it is said to do better. It would be surprising if Komodo comes out ahead.

Some sample head-to-head matches:





Just curious: what version of xboard is this?

Thanks

Re: Komodo 4 Initial Impression

Posted: Sat Feb 18, 2012 5:57 pm
by kingliveson
notyetagm wrote: Just curious: what version of xboard is this?

Thanks
4.5.3-4.2