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in book. In DICTIOUS you will not only get to know all the dictionary meanings for the word
in book, but we will also tell you about its etymology, its characteristics and you will know how to say
in book in singular and plural. Everything you need to know about the word
in book you have here. The definition of the word
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English
Prepositional phrase
in book
- (chess, uncommon) Of a chess player: following a main line ("a standard sequence of opening moves considered to be best play").
- Antonym: out of book
2022 January 21, Colin McGourty, “Tata Steel 5: Rapport & Mamedyarov hit the front”, in chess24, archived from the original on 2022-05-19:The Sicilian opening was wild, but the speed of play made it clear both players were "in book", up to a point.
2023 January 19, Mark Crowther, “Giri overtakes Abdusattorov in a dramatic final round of the Tata Steel Masters to grab his first title”, in The Week in Chess, archived from the original on 2023-02-01:Wesley So had prepared a line with a temporary pawn sacrifice against Praggnanandhaa and both players appeared to be in book for a long time.