Good knight

A good knight is not a different kind of piece. It is a knight whose placement and function suit the position. It may control important squares, attack targets, blockade a dangerous pawn, defend critical points, or support an entry square, a point from which another piece can penetrate enemy territory.

What usually makes it strong

• It has several useful squares and is not trapped by its own pieces.
• It is supported and cannot easily be chased away by an enemy pawn.
• It attacks real targets or restricts opposing pieces.
• It has a route in and, when necessary, a route out.
• Its work contributes to the overall plan rather than merely controlling many squares.

Knights often thrive in a cramped position or behind blocked pawns because they can jump over them. In an open position, bishops and rooks may gain reach while a slow knight falls behind. Structure alone does not decide the matter, however. A central knight with no targets or one that can be chased away may be worse than a less impressive but stable knight.

When considering an exchange, compare the future functions of both pieces. Trading an excellent knight for a restricted bishop may remove your best piece and relieve the opponent, even when their nominal values are similar.