Why does the evaluation show two very different numbers? • page 1/2 • General Chess Discussion • lichess.org

The game and position for one example can be seen here

https://lichess.org/rEjMSdo9/black#48

This comes up from time to time when I go over my games. It will give a number like 4.4, but the best move for white is 2.6. I find this a significant discrepancy. From the 3 lines shown, Qb3 doesn't seem to be as bad.

https://i.imgur.com/tv9V3yX.png

The game and position for one example can be seen here https://lichess.org/rEjMSdo9/black#48 This comes up from time to time when I go over my games. It will give a number like 4.4, but the best move for white is 2.6. I find this a significant discrepancy. From the 3 lines shown, Qb3 doesn't seem to be as bad. https://i.imgur.com/tv9V3yX.png

DerekMcGill

#2

Can i ask how do you get the 3 engine lines ?

Girls_play_chess edited

#3

@NoNeedForMistakes, I see.. you were lucky because here your queen could get blocked, this is why. If we Analyze the game, the signs will show us black's best move is Q e2 because now B b4 for white, B c2 for black, Qxa2 for white and now Bxh7 for black :-)
Happy chessing and all the best!! :)

@NoNeedForMistakes, I see.. you were lucky because here your queen could get blocked, this is why. If we Analyze the game, the signs will show us black's best move is Q e2 because now B b4 for white, B c2 for black, Qxa2 for white and now Bxh7 for black :-) Happy chessing and all the best!! :)

NoNeedForMistakes edited

#4

@DerekMcGill By pressing that engine button on the right to be green. To get more than one line, click the three lines on the lower right next to the move buttons. Then there is a computer analysis option to add multiple lines.

debrx

#5

This happens when you click the 'request a computer analysis' button.
The online analysis assesses the position as +4.4, but your local stockfish that runs in browser thinks it's only +2.6.

This happens when you click the 'request a computer analysis' button. The online analysis assesses the position as +4.4, but your local stockfish that runs in browser thinks it's only +2.6.

J_SEDA_conant

#6

Adding on to @debrx , if you let local stockfish run for longer it will take over the computer analysis and show what it thinks is the position

NoNeedForMistakes

#7

@J_SEDA_conant You are saying the "computer analysis" is not Stockfish?

Trying_Kings_Indian

#8

It must be a browser glitch or something. Mine matched the top score after 1-2 seconds:

https://i.imgur.com/8HsixV9.png

It must be a browser glitch or something. Mine matched the top score after 1-2 seconds: https://i.imgur.com/8HsixV9.png

Trying_Kings_Indian

#9

@NoNeedForMistakes "You are saying the "computer analysis" is not Stockfish?"

I believe when you click "request analysis", it requests a server-side analysis done by Stockfish 13 ... but the server only spends like 1-2 second per move analyzing. When you click that button up top, the analysis is done infinitely (as long as you stay in that position) by a browser version of Stockfish 11. BUT, when you're running infinite analysis, the score should update as it analyzes and not just keep the serverside score for more than a couple seconds.

@NoNeedForMistakes "You are saying the "computer analysis" is not Stockfish?" I believe when you click "request analysis", it requests a server-side analysis done by Stockfish 13 ... but the server only spends like 1-2 second per move analyzing. When you click that button up top, the analysis is done infinitely (as long as you stay in that position) by a browser version of Stockfish 11. BUT, when you're running infinite analysis, the score should update as it analyzes and not just keep the serverside score for more than a couple seconds.

A_0123456

#10

@NoNeedForMistakes As @Trying_Kings_Indian says, wait for higher depth because @debrx is correct that online analysis vs local analysis are different.