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Book move

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Avatar of niga_ch
niga_ch
Mar 8, 2023
0
#1
What is a book move? When I analyse a game it shows book move.
Avatar of bigD521
bigD521
Mar 8, 2023
0
#2

Book moves are recognized opening moves. and their variants. Once a move is made which does not follow, or goes beyond, prescribed moves, you are out  of book.

Avatar of IMKetogenic
IMKetogenic
Mar 8, 2023
0
#3

A book move is a move that is well-known to opening theory. In other words, a book move is an opening move that is considered standard or conventional.