1) Combinatorial game theory 
In combinatorial game theory, Kayles is a simple impartial game. In the notation of octal games, Kayles is denoted 0.77. Because certain positions in Dots and Boxes reduce to Kayles positions, it is helpful to understand Kayles in order to analyze a generic Dots and Boxes position. == History == Kayles was invented by Henry Dudeney. Richard Guy an...
• (n. pl.) A game; ninepins.
Kayles noun plural [ Akin to Danish kegle , Swedish kegla , D. & German kegel , Old High German kegil , whence French quille .] A game; ninepins. [ Prov Eng.] Carew.