Computer analysis - please help me understand it

hi

i just clicked on the computer analysis for one of my games

http://www.chess.com/echess/game.html?id=22033827

and i got some info that i don't exactly understand:

Inaccuracies: 6 = 26.1% of moves
Mistakes: 2 = 8.7% of moves
Blunders: 1 = 4.3% of moves

plus there's some + and - scores for each move

what does that mean

and how to understand the computer analysis correctly and make the best of it

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i edited the post , i replaced the analysis link by the game link

inaccuracies mean you (or your opponent) went slightly wrong.

Mistakes mean you went quite wrong.

Blunders are places you went, very, very wrong (like hanging a pawn or something).

+ means how much better white is in terms of pawns (E.G. +1.32 means white is up 1 pawn, and 32/100ths of a pawn), - means how much black is better.

when it says + and then a number, that is the advantage that it thinks that white has, when it says - and then a number, that is the advantage that it thinks that black has.

Innacuracies are moves that are not bad, but are not the best move that could have been made.  These are designated with an ?!

Mistakes are moves that are bad, but probably will not kill your game.  These are designated with an ?

Blunders are aweful moves that could cost you the game.  These are designated with an ??

ok thanks guys ,

but in the analysis , when trying to see my blunder it told me it's the 24th move.

but it was this move that have allowed me to checkmate the enemy king.

so basically i consider it the best move , while the computer consider it a blunder, why ?

Presumably, chesslb, bearing in mind we can't actually see the analysis due to permission (only your account can view it), it is saying that your opponent's move is a blunder, as it allows mate.

Hard to say, because we others cannot see your computer analysis, only you can. Please, tell which of your games is in question.

Was your opponent moha11?

24 ... Rxe3? because of

25. Qxe3

You was lucky, because of your opponent took with rook instead of queen.

i replaced the link

here's the link to the game:

http://www.chess.com/echess/game.html?id=22033827

and i think the blunder was adressed to me because all the other mistakes were mine :P

that is why it was a blunder by you, if he had played correctly you would have been down.

i took this in consideration , but let's assume he ate withthe queen

why would this be a huge blunder wouldn't it be a some sort of piece exchange ,

i has hoping he would eat with rook or with pawn but even if he didn't i would have a more easy way if the queen was were it should be ,

is the blunder based on the value , because rook is more valuable than bish ?

exactly

The short answer is "YES!"

The thing to understand is that the values weren't just given to the pieces for no reason at all (even if they're not 100% accurate and depend on the position).

In most cases, losing a rook for a bishop is enough to make sure the opponent can just win the game if he plays well. (That is, in most cases, it means that him playing well would probably leave you with no chances of saving the game).

That's how bad it is to just lose material. You should consider the BEST move of your opponent, and assume he makes it. It doesn't matter if you can mate if he misses the threat, you seem to know the value of the pieces already, so you knew the exchange is bad for you if he had taken the right way. So why did you do it? (my assumption is "hoping for the mate", but that's just a common beginner misconception. can't play well by hoping for mistakes.)

Hope this makes it clearer

Also keep in mind that the totals of Blunders, Mistakes, and Inaccuracies are for both players in the analysis, not just you.

Well that was interesting. I have the same problem, trying to figure out how to use the "computer analysis". Oh well I'll go back and look at my "computer analyses".

The computer analysis is atrocious anyway :/