If you play chess seriously, you will almost certainly want to analyse the game afterwords. If is best to do this initially without any computer assistance. Once you have analysed the game yourself, you should analyse the game with a chess engine. Unfortunately, a lot of confusion is caused by the different types of engine, their interfaces (they have two), whether they are free or commerical etc etc. This sites hopes to reduce some of the confusion. It also have links where you can download the best free chess engines, but unlike some sites does not provide links to loads of different engines, which is confusing.
It should be noted at the start that whilst there are litterally thousands of chess engines, there are only a dozen or so worthy of any consideration. So this site only has links to the good ones.
A chess engine is a computer program which can analyse any given position on a chess board and give an evaluation of the position at that point in the game. An engine gives any position a score. A positive score indicates the chess engine believes white has the advantage, a negative score indicates black has the advantage, and a score of zero indicates the chess engine considers the game is equal.
The score is given in units of pawns, so a figure of +1.33 indicates white is better by approximately one and a third pawns.
