Author: Dan Andersson
Date: 16:38:54 11/24/01
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There are several non obvious transposition table issues in many games. I will mention a few: Most transpositions occur at the same depth of the tree. Most interior nodes will be located close to the leaf node due to the geometrical growth of nodes. These two make it clear that it is more beneficial to probe for transpositions deeper down in the tree. Because most of the time in search will be spent close to the leaf nodes. And why always replace works OK for transposition tables. A TT lookup is beneficial because it not only replaces search but also gives move ordering information that also helps to reduce the search tree. That is the main gain when using transposition tables in Othello. Just a few reasons. MvH Dan Andersson
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