Analyzing with Lucas Chess

Hi,

I have a simple question related to analyzing games with the free software Lucas Chess. I succeed at importing games and analyzing them with a chess engine. However, all I get is an analysis per move, i.e. Lucas Chess gives only a number of points to each move. This is a good evaluation of the move in itself, but I would also like to get a general evaluation. So something like: the evaluation is now +0.53 or -0.05.

Is it possible to get this with Lucas Chess. If the answer is yes, how do I get this?

Indexes is a way to get an evaluation of the game, perhaps it is useful to you, the next image is a 9 version screenshot :

I'm sorry but I don't see how this is an answer to my question. I'd like to be able to get for any position an evaluation in a form like +1.21 or whatever the current evaluation might be.

Sorry, I thought you meant a complete game.

If you want to know what is the evaluation of a position, this is the evaluation of the best next move or the evaluation of the move that have just done. Or via analysis option, that shows evaluation of all moves of a game.

In any game if you press double click over any position (on pgn table), then begin an analysis, and at end the evaluation is showed in the table of pgn.

I'm sorry again, but I don't search an evaluation of a particular move. I find it very confusing anyway that moves are evaluated with a 'number of points'. I want to know what the evaluation of the position is.

The evaluation of a position is the evaluation of the best that can be made  in that position. (It might not be obvious at first, but think about it for a while.)

How is that true? All I have now with Lucas Chess is an evaluation in terms of points of my moves or other moves that could have been made. I don't know how to interpret this. And this way I don't know how the actual position is evaluated.

If a move in a given position for white is Qa8# checkmate, what would you think the evaluation of this position with white to play would be ?

The evaluation of a position is by definition the evaluation of the best move possible from it, because that is the move that should get played, and any other move should be considered an error that blunders away part of the possible score. Engines typically only print the best move and its expected consequeces (unless you switched them to 'multi-PV mode', where they also evaluate sub-optimal moves).

So the evaluation of the move and the position is one and the same thing.

Evaluation you get is the evaluation of the position after the move not the move itself.

@hicetnunc: sorry but that was really a very stupid rethorical question which adds nothing to my question. 

@HGMuller and FatCat99: Aaah, I think I get it now. I thought the evaluation of the move was independent from the evaluation from the position, so -how I saw it- you could get a positive score for a good move even though you you're position was worse. But apparently the evalutation is not the evaluation of the move itself but the move of the position. 

Is the evalution that Lucas chess gives equivalent to the evaluations I'm used to from other engines? So if Lucas chess gives a score of -100, is this then equivalent to -1 (one pawn advantage for black)?

It would be infinity (∞) !

Go to Options/Configuration and change it there to usual evaluation values

Well, there is one caveat: engines work internally with a so-called 'static evaluation', which is a heuristic describing the value of the current position. But it is only meaningful in quiet positions. E.g. if your opponent has a queen more on the board than you, it would evaluate it as minus 9, even if it was your turn, and the opponent's queen was hanging (because he just captured yours, and now you are going to recapture it). The evaluation of the position would then be ~0, because that is what the recapture will lead to.

Note that Lucas Chess is not an engine, but a graphical user interface. It just relays the analysis that the currently loaded engine produces.

@FatCat99: thank you, this was exactly what I needed. I don't understand why that's not the default position. In that case this topic would not have to be opened.

@HGMuller: uhm, not really. I my games the evaluation doesn't vary much after a capture, which would have been the case if it worked like you described.

This is expected: usually engines don't print the static evaluation of the position they analys, not even at zero ply. (Because they usually terminate each line with a capture search to gobble up hanging pieces. So even a 0-ply search would still play the ply to play the hanging Queen.)

I mentioned it because your question might have been about this static evaluation, that you wanted to see that.