1000 Medium to Hard Killer Sudoku Puzzles Killer Sudoku(also called killer su doku, sumdoku, sum doku, sumoku, or addoku) is a number placing puzzle game based on a grid with 9x9 cells. The object of the game is to place numbers 1 to 9 in the empty cells so that each row, each column, and each 3x3 box contains the same number only once. And the sum of all numbers in a cage must match the small number printed in the corner, and the filled-in digits must be different. In this big puzzle book, we've included 1000 really ...
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1000 Medium to Hard Killer Sudoku Puzzles Killer Sudoku(also called killer su doku, sumdoku, sum doku, sumoku, or addoku) is a number placing puzzle game based on a grid with 9x9 cells. The object of the game is to place numbers 1 to 9 in the empty cells so that each row, each column, and each 3x3 box contains the same number only once. And the sum of all numbers in a cage must match the small number printed in the corner, and the filled-in digits must be different. In this big puzzle book, we've included 1000 really challenging puzzles: 500 medium puzzles and 500 hard puzzles, 4 puzzles per page Add to cart now if you want to try a different and difficult Sudoku style.
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