Author: chandler yergin
Date: 06:52:20 01/30/06
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For every Key or subkey Chessbase has one or more classification positions which are used to identify that Key. The Program plays through the game backwards and comares every position it encounters with all the positions contained in its libray of classification positions. As soon as a matching is encountered, it knows under which Key it must classify the game.The reason for playing through the game backwards is that we are interested in the deepest position i.e. the one that identifies the most detailed variation. Some DataBases have over 50,000 Opening Keys and classification positions.
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