a pawn with no pawns of the same color on the neighboring files. It is usually evaluated just like a backward pawn, except the penalty tends to be bigger, as it is more open to attacks. It may be considered even weaker if positioned on the half-open file, as then it is open to attack by enemy rooks. Many programs tend to evaluate an isolated pawn in the center as weaker than on the wing, as it can be attacked from more directions .
There is a whole class of openings characterized by the presence of an isolated queen's pawn. In exchange for this structural weakness the side with an IQP gets greater mobility, therefore this kind of positions can be used for balancing the evaluation functions parameters.
- Isolated Pawn from Wikipedia
- Isolated pawn (chess), Britannica Online Encyclopedia
- Isolated Pawn by Natalia Pogonina, Chess.com
- Isolated Pawn from chessgames.com