Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Isolate is a logic-based line-placement puzzle. The puzzler is provided with a grid containing walls, dots and a set of area sizes. A solved grid will contain areas of the given sizes containing two dots each. The puzzle was invented by an English puzzle enthusiast, Laurence May, in 2007. It is produced by Vexus Puzzle Design and appears daily along with Sudoku and Kakuro in the Daily Mail.

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