Conversion

In chess, conversion means making an advantage produce a concrete result. The advantage may consist of extra material, meaning more pawns or pieces, or pieces of greater value; an exposed enemy king; a dangerous pawn; or more active pieces. Being better is not enough by itself: the player still has to find a reliable way to use that edge.

The main obstacle is counterplay, which means active threats that give the disadvantaged side chances. Good conversion therefore begins by checking the opponent's possible checks, captures, and direct threats. The stronger side can then choose a route that preserves the advantage without allowing unnecessary complications.

Common methods

• Restrict counterplay before beginning the decisive operation.
• Improve the least active piece and bring it into the main task.
• Create a second target when the opponent can defend the first one.
• Use simplification when exchanges lead to an easier win, not merely to fewer pieces.

Conversion does not mean playing passively or exchanging everything automatically. An exchange, a sequence of captures in which both sides give up material, may remove an important defender, but it may also enter a drawn position. The inferior side will often search for a resource, a move or idea that changes the problem, or a swindle, a practical difficulty that saves the game only if the winning player errs. The advantage must be checked again after every important change.