Komodo 4 Initial Impression

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kingliveson
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Komodo 4 Initial Impression

Post 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:





PAWN : Knight >> Bishop >> Rook >>Queen
kingliveson
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Re: Komodo 4 Initial Impression

Post 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.
PAWN : Knight >> Bishop >> Rook >>Queen
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Carlos Ylich
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Location: São Paulo

Re: Komodo 4 Initial Impression

Post by Carlos Ylich »

Hello,
What is this interface are you using?
Thanks
zullil
Posts: 82
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Real Name: Louis Zulli
Location: Pennsylvania, USA

Re: Komodo 4 Initial Impression

Post by zullil »

Carlos Ylich wrote:Hello,
What is this interface are you using?
Thanks
It appears to be Xboard.
kingliveson
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Joined: Thu Jun 10, 2010 1:22 am
Real Name: Franklin Titus
Location: 28°32'1"N 81°22'33"W

Re: Komodo 4 Initial Impression

Post by kingliveson »

zullil wrote:
Carlos Ylich wrote:Hello,
What is this interface are you using?
Thanks
It appears to be Xboard.
That's right.
PAWN : Knight >> Bishop >> Rook >>Queen
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notyetagm
Posts: 139
Joined: Thu Jun 10, 2010 6:12 pm

Re: Komodo 4 Initial Impression

Post 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
kingliveson
Posts: 1388
Joined: Thu Jun 10, 2010 1:22 am
Real Name: Franklin Titus
Location: 28°32'1"N 81°22'33"W

Re: Komodo 4 Initial Impression

Post by kingliveson »

notyetagm wrote: Just curious: what version of xboard is this?

Thanks
4.5.3-4.2
PAWN : Knight >> Bishop >> Rook >>Queen
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