Chess - Programming - Game Phases

Tapered Evaluation - Different values at different stages of the game (beginning, middle-game, end-game).

Usually Game Phases refer to Opening Phase, Middle Game Phase and Endgame Phase.

Evaluation often allocated different scores depending on the phase.
But when there is a change of Game Phase this can make quite an abrupt change in evaluation scores.

Best therefore to smooth out the transition between Game Phases.