forced

Could someone explain the "forced" in computer analysis of the finished games. This parameter is new, I did not see it before. Thanks a million.

it means a move which forces opponent to make a certain move .if he chooses to make a move other than the certain particular move then he will be making a bad move or even a blunder .forced moves are checks , captures , threats .

I don't have a diamond membership, but honestly I don't really understand how a computer can decide upon "forced" moves. The most precise way I'd define it is:

*top choice is at least evaluated better than the 2nd choice by a large amount, which is arbitrary, but often at least two pawns worth of evaluation by the computer.

*the difference between the 1st choice and 2nd choice changes the computer's evaluation threshold from win to draw, or draw to loss, which again is arbitrary, but has to somewhat reasonable.

The problem with this is that of course, some moves that are "forced" are hard to find, relative to skill level, and it's subjective. It's not always jsut a recapture, etc.. 

Thanks a lot to both Web14 and Cherub_Enjel.

I don't think this definition is quite correct. I could be wrong, but as I understand it, a forced move is a move where you only have the option to play one move. For example, if your opponent puts you in check and your only LEGAL move is Kh8, that move is considered forced. Like I said, I could be wrong, but I think the definition supplied previously is better suited to the term "blunder": a move which drastically changes the evaluation of the game. When I've looked at the computer analysis for my games, forced moves were always checks. Hope this helps.