move scoring
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In the game analysis each move has a plus-minus number to it. My last blunder was outrageous and scored a -10 something. What the heck does that mean and is there a place to see the basic idea behind it? Thanks!
I've not played on chess.com in a while so I don't know how chess.com does it. But one way of scoring a move is comparing it to the best computer move (since the same computer is doing the scoring, your move will always be <= 0). A -10 score, means the difference is like your move is 2 rooks down compared to the best (computer) move, in that computer's opinion/algorithm.
Thanks! I do get positive numbers on strong moves though...?
There are lots of ways to score moves; what I described is just a common way of doing it. But almost all of them translates the scoring into the chess piece points so that we can understand it easier. So, in your case of -10, it is like down 2 rooks (or 10 pawns).
There is also board position evaluation, which is a bit different than move scoring. In this evaluation, the computer compares white vs black. So, you can see positive values if you have an advantage. Perhaps this is what you really wanted to know?