21168 Players currently online!
Man vs. Machine - good luck!
Turn-based games at any time!
Vote for the best move to win!
Do you have what it takes?
Backgammon, Yatzy, and more!
Sharpen your tactical vision!
Get advice and game insights!
Learn from top players & pros!
View millions of master games!
Your virtual chess coach!
Perfect your opening moves!
Test your skills vs. computer!
Find the right private coach!
Can you solve it each day?
Bring it all together!
Beginners, start here!
Make friends & play team games!
News from the world of chess!
Search all Chess.com members!
Find local clubs & events!
Who's the best of your friends?
Read what members are saying!
In endgame evaluation we should not always believe Chess engines blindly. they shows incorrect value in many endgame positions. such as the position below is valued by nearly +5 for white, by all top engines!
but, this is a draw game by perfect play. interestingly, the perfect play is very easy for black - he has to move his king b8 and c7 repeatedly.
Engines are bad at evaluating any position whose moves must have an impact greater than 10-15 moves later. Within this window they are very accurate, but outside of it they are completely blind.
Endgames provide countless examples of computer misevaluations. But also closed positions and openings. Their moves are not bad, but you can't trust the number evaluation without doing some work with the engine.
Years ago there was a famous example of just how bad computers are at endgames. Black was up two rooks that were blocked behind a completely locked-up board. One of them was en prise- but of course taking it would open up the board and eventually black would use the remaining rook to win. It took decades of development for engines to realize that taking the rook was a bad thing.
Houdini 3 shows +19 for white,
but it's draw!!
Your second example is not very probable to say the least
But there are even worse things, such as this one that the computer evaluated as winning for me (White) (this is from memory, but the main characteristics were the same). When you ask him the moves he just moves the kings forth and back without achieving anything - obviously there is no way to get through the position.
@ Irontiger, the position u showed is evaluated by 0.00, by houdini, Critter,
and stockfish. only rybka 4 shows +1.91
by Martin_Stahl a few minutes ago
at what point is style not a factor in someone's play?
by RCMorea 2 minutes ago
dont disconnect on purpose warning
by TRextastic 3 minutes ago
Website problems today?
by Everywhichwaybutlose 3 minutes ago
Tournament kid player cheating what should I do?
by Diakonia 7 minutes ago
by Pulpofeira 8 minutes ago
Is there any chance that a 1300 rated player can beat a 2700 rated player?
by DavidPeters2 9 minutes ago
Torneo per Italiani.
by lentoscacchi 12 minutes ago
The OFFICIAL Don't Boycott The Daily Puzzle Thread.
by Diakonia 13 minutes ago
5/6/2016 - Nezhmetdinov - Ermolin, Kazan 1946
by blujay88 14 minutes ago
Why Join | Chess Topics |
Help & Support |
© 2016 Chess.com
• Chess - English
We are working hard to make Chess.com available in over 70 languages. Check back over the year as we develop the technology to add more, and we will try our best to notify you when your language is ready for translating!