Analysing games

Why is it important to analyse games?

It gives you the posibility of learning from your own mistakes, but I have some things to say: - Sometimes the analysis tells you whether a move is a mistake or an inaccuracy, but if you don't have a somewhat high level you can't see why that move is bad

Why does this happen?

Because it only tells you the immediatly next move, nothing else. If only the engine showed you four or five moves ahead with the best plays for both sides (which I think it must calculate in order to find the best move) a lot of people would see their mistakes -including me.

What does an analysis show you?

The analysis tells you whether a move is a mistake or an inaccuracy, but if you don't have a somewhat high level you can't see why that move is bad.

And something I would love: make the engine tell you the only best move in each turn. I know there's the "inaccuracy" flag, but I believe it tells you the move in which you lose 0.5 pawns, meaning that a move in which you lose 0.49 is not flagged and you can't see why that is bad.

Does it tell your mistakes?

Yes it does and tells you the right moves.
Does it have an issue sometimes?
Yeah that first issue is considered a lot here. I can't remember where it was last discussed, but my idea was that any depth of moves deep (shoving the continuation 1 or 3 or 5 etc. Ply long) is incomplete because people are going to question the sub-moves at times, too. Maybe not in all cases, but I think more often than not the deeper analysis lines cause people to ask more questions than they do answer. I guess the idea is that if a single move correction isn't enough, people can paste the FEN of the game into a chess engine and seek into the moves list at the position to get extended analysis from their own engine. It does sound sort of inflexible...it's a hard issue.

As for 49 centi-pawns versus 50 centi-pawns, chess engines are known to be very sensitive to score changes on positional evaluation. A move considered 0.80 points below the best move at a depth of 16 Ply might be considered a whole point ABOVE what was originally thought the best move at 17 or 18 Ply. Even the most powerful engines can be really sensitive, so that's why there is some effort to dissolve the difference between score comparisons.