Featuring a huge number of Kropki Sudoku puzzles, all carefully sorted into order of increasing difficulty, this unique collection of 200 puzzles is full of attractively-designed challenges from best-selling puzzle author Gareth Moore, author of many international books.
Kropki Sudoku adds circles between squares which indicate two different types of relationship. A black circle marks all adjacent squares where the value in one is double that in the other, such as 3 and 6. A white circle indicates all numerically-consecutive adjacent squares, such as 3 and 4. The initial grids are empty and it's up to you to use the circles - and the lack of circles - to fill-in every square of the otherwise standard Sudoku puzzle!
Printed on large, top-quality paper ideal for solving on, the 200 Kropki Sudoku puzzles vary in difficulty from easy to hard so whatever your preference or experience you'll always find a puzzle here to suit you.
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Gareth Moore is the author of a wide range of brain-training and puzzle books for both children and adults, including The Mammoth Book of Fun Brain Training, The Rough Guide Book of Brain Training, Keep Your Brain Fit: 101 Ways to Tone your Mind, and The Mammoth Book of Brain Workouts. He also writes the monthly magazine Sudoku Xtra. Find more of his books at www.PuzzleBooks.org.
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