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Game Phases

1,757 bytes added, 14:33, 16 May 2018
Created page with "'''Home * Evaluation * Game Phases''' The textbook division of '''game phases''' enumerates three of them: * Opening * Middlegame * Endgame In..."
'''[[Main Page|Home]] * [[Evaluation]] * Game Phases'''

The textbook division of '''game phases''' enumerates three of them:
* [[Opening]]
* [[Middlegame]]
* [[Endgame]]

In the opening, the focus is on [[Development|development]], in the middlegame - on [[Attacks|attack]] and defense, in the endgame - on pawn promotion and realization of the [[Material|material]] advantage.

Whereas this definition is good enough for humans, coding it in a straightforward manner would introduce [[Evaluation Discontinuity|evaluation discontinuity]] in many places. For that reason many programs define several game phases, based on the amount of [[Material|material]] on the board.

=See also=
* [[Development]]
* [[Evaluation Discontinuity]]
* [[Piece-Square Tables#MultipleTables|Multiple Piece-Square Tables]]
* [[Stockfish#EvaluationGuide|Stockfish Evaluation Guide]]
* [[Tapered Eval]]

=Forum Posts=
* [http://www.talkchess.com/forum/viewtopic.php?t=60063 Anomaly of Stockfish eval depending on phases of the game] by [[Kai Laskos]], [[CCC]], May 05, 2016
* [http://www.talkchess.com/forum/viewtopic.php?t=60565 is phase a good indicator of game progress?] by [[Alexandru Mosoi]], June 23, 2016 » [[Tapered Eval]]
* [http://www.open-chess.org/viewtopic.php?f=5&t=3088 Early / middle / end game transitions?] by notachessplayer, [[Computer Chess Forums|OpenChess Forum]], February 19, 2017

=External Links=
* [https://en.wikipedia.org/wiki/Outline_of_chess Outline of chess from Wikipedia]
* [https://hxim.github.io/Stockfish-Evaluation-Guide/ Stockfish Evaluation Guide] » [[Stockfish#EvaluationGuide|Stockfish Evaluation Guide]]
* [http://www.mark-weeks.com/aboutcom/ble24phs.htm Phases of a Chess Game] by [[Mark Weeks]]

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