Book of Sudoku Variants – Jigsaw Sudoku, Killer Sudoku, Tripod Sudoku, Sudoku X – 200 Easy Puzzles Book 1
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The rules of Jigsaw Sudoku are similar to standard Sudoku, since you must place each of the numbers 1 to 9 (or 1 to whatever the size of the puzzle is) into each of the rows and columns. However whereas standard Sudoku also has rectangular boxes that must each contain every number, in Jigsaw Sudoku these boxes are replaced by different bold-lined shapes that must each contain every number instead.(Killer Sudoku) is a mix of Sudoku and Kakuro. Your goal is the same as in regular sudoku: fill every row, column and 3×3 region with the numbers 1-9 once. The objective is to fill the grid with numbers from 1 to 9 in a way that the following conditions are met: Each row, column, and nonet contains each number exactly once. The sum of all numbers in a cage must match the small number printed in its corner. No number appears more than once in a cage.(Tripod Sudoku) is a variation of sudoku, where the borders of regions are not defined. The goal is to fill the grid with digits and divide the grid into regions. Each digit appears exactly once in every row, column and region. All points where three lines meet are given. There are no points where four lines meet.(Sudoku X)Each puzzle consists of a 9×9 grid containing given clues in various places. The object is to fill all empty squares so that the numbers 1 to 9 appear exactly once in each row, column, diagonal and 3×3 box.