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A variation can be any number of steps as long as each step would be legal if it were to be played. It is often as far ahead as a human or computer can calculate; or however long is necessary to reach a particular position of interest. It may also lead to a terminal state in the game, in which case
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The principal variation refers to the particular variation that is the most advantageous to the current player, assuming each other player will respond with the move that best improves their own position. In other words, it is the "best" or "correct" line of play. In the context of
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can refer to a specific sequence of successive moves in a turn-based game, often used to specify a hypothetical future state of a game that is being played. Although the term is most commonly used in the context of
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to be the most advantageous, but is not guaranteed due to the technical limitations of the algorithm.
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analysis, it has been applied to other games. It also is a useful term used when describing computer
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the term "winning variation" or "losing variation" is sometimes used.
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149:"Searches, tree pruning and tree ordering in Go"
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27:A specific sequence of moves in a game
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71:The principal variation of this
43:-search algorithms (for example
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180:Game artificial intelligence
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175:Combinatorial game theory
89:artificial intelligence
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195:Trees (graph theory)
151:. 21 December 2007.
63:Principal variation
18:Principal variation
125:Alpha-beta pruning
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185:Search algorithms
16:(Redirected from
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87:-searching game
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190:Computer chess
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169:Categories
160:Variations
136:References
130:Negascout
105:Game tree
76:game tree
32:variation
99:See also
93:believed
120:Negamax
115:Minimax
73:minimax
45:minimax
53:Chess
37:Chess
85:tree
41:tree
51:or
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49:Go
30:A
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
