Keep your mind young and your memory sharp with 450 Sudoku Variety Puzzles Book.
Scientific research has shown that solving logic puzzles as Sudoku keeps your memory sharper and your mind younger. There are 5 different types of puzzles in this book, Consecutive Sudoku, Non-Consecutive Sudoku, Centre-Dot Sudoku (Anti-Diagonal), XV Sudoku, and Greater than Sudoku.
The book has 90 puzzles for each type from easy to hard, a total of 450 puzzles with solutions.
Non-Consecutive Sudoku is a variation of traditional sudoku with the same rules, i.e. numbers from 1 to 9 to be placed in every row, column and 3x3 block without repetition. However, non-consecutive Sudoku takes it little further by non-sequential condition, where there are no consecutive numbers in any adjacent cells either vertically or horizontally. So, if a cell has number 1 then the neighbour cells must not have 2. Most of the time, logic exclusion of the numbers is the main technique to use when solving such puzzles.
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