This is where top Engines fail compared to human............

Discussion of anything and everything relating to chess playing software and machines.

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Robert Flesher
Posts: 1280
Joined: Tue Aug 18, 2009 3:06 am

Re: This is where top Engines fail compared to human........

Post by Robert Flesher »

kgburcham wrote:
George wrote:
kgburcham wrote:
George wrote:
kgburcham wrote:
George wrote:
Robert Flesher wrote:
cdani wrote:At last Karjakin has failed like an human...

Hi George, maybe you should run a few matches. White is winning in my tests with ease.
I do NOT have to, anybody with the latest Komodo or Stockfish can take this position and let it play both sides and see that it would have ended in a DRAW
==> [D]6k1/1b3p2/p3pPpp/6P1/1p3Q1P/1Pr5/4K3/8 b - - 0 1
We can play this out if you want to George
Okay where do you want to meet, and witout using any engines?
this is an engine forum.
you said an engine could only draw from this position.
I checked your post it is incorrect
set it up and we will play it out to see if what you post is correct or not
Why don't you find out by yourself set it up at 1 or 3 minutes per side and let Komodo or Stockfish play both sides till the very end and you post it yourelf after you learn and find out how to DRAW
would someone post a draw line. all of the lines I play using my methods win for white.

There is no draw, white wins easy. George is clinging to human chess ideas, however, they are not applicable here.
Robert Flesher
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Joined: Tue Aug 18, 2009 3:06 am

Re: This is where top Engines fail compared to human........

Post by Robert Flesher »

Graham Banks wrote:
George wrote:In this position which is currently playing LIVE, Karjakin has a Rook + Bishop and 2 extra pawns to Jakovenko Queen minus 2 pawns, all engines are giving Jakovenko a huge edge , but the position is a dead draw where if played precisely it should end in a DRAW. I believe that the value of the Queen Should be set to 9 in the beginning up to the middle stage, then reduced to 8 once the position enter the endgame stage, or simply to 8.5 throughout the entire game ==>
This was the original position from where if you let Komodo or Stockfish play it out by itself both sides, the position should have ended in a draw, but for some reason every engine was giving the White side with the Queen the edge or advantage :shock:
[D]6k1/1b3p2/p3pPpp/6P1/1p3Q1P/1Pr5/4K3/8 b - - 0 1
This game is still in progress Jakovenko vs Karjakin
==> http://khantymansiysk2015.fide.com/game-analysis-2/
Such claims regarding whether positions are won, lost or drawn and that engines have no idea are made here frequently.
In most cases, the poster gets left with egg on their face.

+1 :lol:
BeyondCritics
Posts: 396
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Full name: Oliver Roese

Re: This is where top Engines fail compared to human........

Post by BeyondCritics »

zullil wrote:
AdminX wrote:
Thomas Lagershausen wrote:
zullil wrote:
kgburcham wrote:
Thomas Lagershausen wrote:The keyposition is: [D]6k1/1b3p2/p3pPpp/8/1p4PP/1P3r2/4K3/2Q5 w - - 2 42

The computers missed the strong human move 42.g5 ! and play the stupid 42.Qc7??.

After this blunder by the computers black can build a fortress with rook and pawns and black draws the game.

after the computer move Qc7 and then captures, score at +8 and increasing.
you have a funny definition for blunder

38/68 0:59 +8.00-- 44...Re6 45.Qb8+ (1.628.873.077) 27153
TB:3.313.232
Well, 42. g5 definitely wins. Looks like Qc7 does too, unless Stockfish is missing a true fortress defense for Black:

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info depth 50 seldepth 96 multipv 1 score cp 1167 nodes 29680653978 nps 37687278 hashfull 994 tbhits 84240825 time 787551 pv c1c7 f3f6 c7b7 e6e5 b7b4 g8g7 b4b8 f6e6 e2e3 e6e7 b8b6 e7e6 b6c7 e6e8 e3e4 e8e6 c7d8 e6c6 e4e5 c6e6 e5d5 e6f6 d5c5 f6e6 d8d4 g7g8 c5d5 g6g5 h4g5 h6g5 d4c5 g8g7 c5c3 e6f6 c3e5 g7g6 e5d4 g6g7 d5c5 g7g6 d4d8 g6g7 c5d4 f6f4 d4e5 f7f6 e5d5 f4f1 d8e7 g7g6 e7e3 g6f7 e3e6 f7g7 e6a6 f1c1 d5d6 c1e1 b3b4 e1c1 b4b5 g7f7 d6d5 c1d1 d5c4 d1c1 c4d3 c1d1 d3c2 d1e1 b5b6 e1e6 a6a7 f7g6 b6b7

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info depth 51 seldepth 100 multipv 1 score cp 1402 nodes 60957968103 nps 39145404 hashfull 999 tbhits 145657048 time 1557219 pv c1c7 f3f6 c7b7 g8g7 b7b4 e6e5 b4b8 f6e6 e2e3 e6e7 b8b6 e7e6 b6a5 e5e4 a5d8 e6c6 e3e4 c6e6 e4d5 e6f6 d5c5 f6e6 d8d4 g7g8 c5d5 g8h7 d4c5 h7g7 c5c3 g7h7 c3c7 e6f6 c7e7 f6f1 e7a3 f1f3 d5e4 f3f6 a3f8 f6f1 e4e3 g6g5 h4g5 h6g5 e3e4 f7f6 f8f7 h7h6 e4d4 f1f3 d4c5 f3f2 f7f8 h6g6 f8g8 g6h6 c5d6 f6f5 g4f5 f2d2 d6c5 h6h5 f5f6 d2c2 c5d4 c2d2 d4e3 d2d6 f6f7 d6e6 e3d4 e6d6 d4c5

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info depth 52 seldepth 112 multipv 1 score cp 1550 nodes 79227126161 nps 38970779 hashfull 999 tbhits 196125926 time 2032988 pv c1c7 f3f6 c7b7 g8g7 b7b4 e6e5 b4b8 f6e6 e2e3 e6e7 b8b6 e7e6 b6a5 g7h7 a5d8 h7g7 e3e4 e6c6 e4e5 c6c5 e5d4 c5c6 d4e4 c6e6 e4d5 e6f6 d5c5 f6e6 d8d4 g7g8 c5d5 g6g5 h4g5 h6g5 d4f2 g8f8 f2f5 e6b6 d5c4 b6c6 c4d3 f7f6 f5d5 c6c1 d5a8 f8f7 a8a7 f7g6 a7a6 c1d1 d3e2 d1g1 a6e6 g6g7 b3b4 g1g2 e2e3 g2h2 e6d7 g7g6 d7c8 h2h3 e3e2 g6f7 c8d7 f7f8 d7d6 f8g7 d6e7 g7g6 e7e6 h3h2 e2d3 g6g7 d3e3 h2h3 e3d4 h3h8 b4b5 h8d8 d4e3 d8b8 e6c6 b8f8 b5b6 g7g8 c6e6 g8h8 b6b7
The output shows that Stockfish misses the fortress defense. The line shown by Stockfish is full of nonsensemoves.The computer didn´t understand that it is important to defend the a6 pawn. After 42.Qc7? Rxf6 43.Qxb7 the right defensemove is 43...g5!

Komodo 9 agree with this. But with a completly wrong evaluation.

34 02:49 1.976.231k 11.639k -3,62 g6-g5 h4xg5 h6xg5 Db7-e7 Kg8-g7 De7-d8 Tf6-g6 Dd8-a5 f7-f5 g4xf5 e6xf5 Da5xf5 g5-g4 Df5-e5+ Kg7-h6 Ke2-f2 g4-g3+ Kf2-g2 Kh6-h7 De5-h5+ Kh7-g7 Dh5-d5 Kg7-f6 Dd5-f3+ Kf6-g7 Df3-f5 Kg7-h6 Df5-f8+ Kh6-h7 Df8-f7+ Kh7-h6 Df7-e7 Tg6-g5 De7-f6+ Tg5-g6 Df6-f7 Tg6-g5 Df7-f8+ Kh6-g6 Df8-d6+ Kg6-f5 Dd6xa6 Kf5-g4 Da6-e2+ Kg4-f4 De2-c4+ Kf4-e5 Dc4-c5+ Ke5-f6 Dc5-f8+ Kf6-e6
35- 03:12 2.242.277k 11.633k -3,69 g6-g5 h4xg5
35- 03:42 2.591.293k 11.647k -3,76 g6-g5 h4xg5
35- 04:50 3.308.938k 11.387k -4,01 g6-g5 h4xg5
35 06:36 4.436.853k 11.204k -4,03 g6-g5 h4xg5 h6xg5 Db7-e7 Kg8-g7 De7-d8 Tf6-g6 Dd8-a5 f7-f5 g4xf5 e6xf5 Da5xf5 g5-g4 Df5-e5+ Kg7-g8 Ke2-f2 g4-g3+ Kf2-g2 Kg8-f7 De5-f5+ Kf7-g7 Df5-d7+ Kg7-h6 Dd7-h3+ Kh6-g7 Dh3-h4 Kg7-f7 Dh4-d8 Kf7-g7 Dd8-e7+ Kg7-h6 De7-h4+ Kh6-g7 Dh4-d4+ Kg7-h6 Dd4-h8+ Kh6-g5 Dh8-e5+ Kg5-h6 De5-d4 Tg6-g5 Dd4-h4+ Kh6-g6 Dh4-e4+ Kg6-h6 De4-e6+ Tg5-g6 De6-e7 Tg6-g4 De7-f8+ Kh6-h7 Df8-f5+ Tg4-g6

This draw is easy to see for a human chessplayer. Still too difficult for a computer.
[d]6k1/1Q3p2/p3pr1p/6p1/1p4PP/1P6/4K3/8 w - - 0 44

From this position Komodo gives 44. Qb8+ Kg7 45. hxg5 +4.40 as the winning line.
Stockfish with syzygy endgame tables now sees a forced win:

Code: Select all

info depth 62 seldepth 98 multipv 1 score cp 12326 nodes 91486665719 nps 45367800 hashfull 999 tbhits 183818289 time 2016555 pv h4g5 h6g5 b7e7 g8g7 e7d8 f6g6 d8a5 e6e5 a5e5 g7g8 e5b8 g8h7 b8b4 g6e6 e2d3 e6f6 b4e4 h7g7 e4e5 g7g6 e5b8 g6h7 b8d8 h7g7 d3e3 f6e6 e3d4 e6f6 d4e5 f6e6 e5f5 e6g6 d8d5 g7g8 d5a8 g8g7 a8d8 g6e6 d8g5 e6g6 g5d8 g6e6 d8d7 e6f6 f5e4 f6g6 d7f5 g6b6 f5e5 g7g8 e5g5 g8h7 g5d5 b6b4 e4e3 h7g8 g4g5 b4g4 d5a8 g8g7 a8a6 g4g1 a6h6 g7g8 g5g6 g1e1 e3d2 e1d1 d2d1
The winning line shown is typical for this fortress type: collect all the pawns and then threat to go into a winning pawn endgame.
Nevertheless i disapprove the harsh tone employed by some. Did you try to understand the intent of the original poster? Is it reasonable to assume that chess programs might fail in this type of positions? What do you think of this position?

[d]8/1Q3p1k/p3prpp/8/1p4PP/1P6/4K3/8 b - - 0 1
zullil
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Re: This is where top Engines fail compared to human........

Post by zullil »

BeyondCritics wrote: Nevertheless i disapprove the harsh tone employed by some. Did you try to understand the intent of the original poster? Is it reasonable to assume that chess programs might fail in this type of positions? What do you think of this position?

[d]8/1Q3p1k/p3prpp/8/1p4PP/1P6/4K3/8 b - - 0 1
Please read my replies. I do not believe any of mine were "harsh." I am very aware that fortress detection is undeveloped in many engines.

Perhaps you meant to reply to some other poster(s).
BeyondCritics
Posts: 396
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Re: This is where top Engines fail compared to human........

Post by BeyondCritics »

zullil wrote:
BeyondCritics wrote: Nevertheless i disapprove the harsh tone employed by some. Did you try to understand the intent of the original poster? Is it reasonable to assume that chess programs might fail in this type of positions? What do you think of this position?

[d]8/1Q3p1k/p3prpp/8/1p4PP/1P6/4K3/8 b - - 0 1
Please read my replies. I do not believe any of mine were "harsh." I am very aware that fortress detection is undeveloped in many engines.

Perhaps you meant to reply to some other poster(s).
My deepest apologies, i think your replies are completely correct. Thats why i have answered here.
So again, sorry for your inconvenience.
zullil
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Re: This is where top Engines fail compared to human........

Post by zullil »

BeyondCritics wrote:
zullil wrote:
BeyondCritics wrote: Nevertheless i disapprove the harsh tone employed by some. Did you try to understand the intent of the original poster? Is it reasonable to assume that chess programs might fail in this type of positions? What do you think of this position?

[d]8/1Q3p1k/p3prpp/8/1p4PP/1P6/4K3/8 b - - 0 1
Please read my replies. I do not believe any of mine were "harsh." I am very aware that fortress detection is undeveloped in many engines.

Perhaps you meant to reply to some other poster(s).
My deepest apologies, i think your replies are completely correct. Thats why i have answered here.
So again, sorry for your inconvenience.
OK, no problem then.

Curious to see how Stockfish assesses the position you posted:
[d]8/1Q3p1k/p3prpp/8/1p4PP/1P6/4K3/8 b - - 0 1[/quote]
Milos
Posts: 4190
Joined: Wed Nov 25, 2009 1:47 am

Re: This is where top Engines fail compared to human........

Post by Milos »

BeyondCritics wrote:The winning line shown is typical for this fortress type: collect all the pawns and then threat to go into a winning pawn endgame.
Nevertheless i disapprove the harsh tone employed by some. Did you try to understand the intent of the original poster? Is it reasonable to assume that chess programs might fail in this type of positions? What do you think of this position?

[d]8/1Q3p1k/p3prpp/8/1p4PP/1P6/4K3/8 b - - 0 1
I think it's worth 100$. Would you like to try, if you draw it I give you 100$, if you loose, you owe me 100$? :lol:
Waiting for your move ;).
styx
Posts: 338
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Re: This is where top Engines fail compared to human........

Post by styx »

Thomas Lagershausen wrote:The keyposition is: [D]6k1/1b3p2/p3pPpp/8/1p4PP/1P3r2/4K3/2Q5 w - - 2 42

The computers missed the strong human move 42.g5 ! and play the stupid 42.Qc7??.

After this blunder by the computers black can build a fortress with rook and pawns and black draws the game.
Are you sure about Qc7 being a blunder? Can you provide a drawing line for black? I just ask because SF, Komodo and Houdini think it's the best move (and it's not like they didn't consider g5). Also a fortress position is never reached in their evaluation and white wins with ease. I tend to trust a computer in this kind of position.
zullil
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Re: This is where top Engines fail compared to human........

Post by zullil »

styx wrote:
Thomas Lagershausen wrote:The keyposition is: [D]6k1/1b3p2/p3pPpp/8/1p4PP/1P3r2/4K3/2Q5 w - - 2 42

The computers missed the strong human move 42.g5 ! and play the stupid 42.Qc7??.

After this blunder by the computers black can build a fortress with rook and pawns and black draws the game.
Are you sure about Qc7 being a blunder? Can you provide a drawing line for black? I just ask because SF, Komodo and Houdini think it's the best move (and it's not like they didn't consider g5). Also a fortress position is never reached in their evaluation and white wins with ease. I tend to trust a computer in this kind of position.
Qc7 wins. There is no fortress.
zullil
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Re: This is where top Engines fail compared to human........

Post by zullil »

Milos wrote:
BeyondCritics wrote:The winning line shown is typical for this fortress type: collect all the pawns and then threat to go into a winning pawn endgame.
Nevertheless i disapprove the harsh tone employed by some. Did you try to understand the intent of the original poster? Is it reasonable to assume that chess programs might fail in this type of positions? What do you think of this position?

[d]8/1Q3p1k/p3prpp/8/1p4PP/1P6/4K3/8 b - - 0 1
I think it's worth 100$. Would you like to try, if you draw it I give you 100$, if you loose, you owe me 100$? :lol:
Waiting for your move ;).
Yeah, it looks like there's no fortress here either:

Code: Select all

info depth 47 seldepth 89 multipv 1 score cp -1404 nodes 64674479264 nps 36149007 hashfull 999 tbhits 117572012 time 1789108 pv f6f4 e2e3 e6e5 b7e7 h7g8 e7e8 g8h7 h4h5 g6g5 e8e5 h7g8 e5a1 g8h7 a1a6 f4g4 a6c8 g4h4 c8f8 h4f4 e3e2 f4e4 e2f3 e4f4 f3e3 f4f5 f8b4 h7g8 b4c4 f5e5 e3f2 e5f5 f2g3 f5e5 b3b4 e5e7 c4d4 e7e1 d4d8 g8g7 b4b5 e1e3 g3f2 e3b3 d8d5 b3b2 f2e3 b2b1 d5d4 g7f8 d4d3 b1g1 d3d8 f8g7 d8d4 g7h7 e3f2 g1c1 d4e4 h7g8 b5b6 c1c8 b6b7 c8f8 e4e5 f7f6 e5e6 g8g7 e6e7 f8f7 e7f7 g7f7