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Positive puzzles game. Suitable for adults and children. 6 puzzles per page. 1002 sudoku puzzles hard levels. Thick paper. Glossy cover. Jigsaw Killer sudoku may be called or searched with the following phrases or names: sudoku, jigsaw sudoku, jigsaw killer, sum sudoku, killer sudoku books, times killer sudoku, sumdoku, sudoku books, hard killer sudoku, jigsaw sudoku, times killer sudoku books, jigsaw sudoku books, killer sudoku puzzles, puzzle, the times killer sudoku books, times ultimate killer sudoku books, sudoku 9x9, killer sudoku puzzle books, killer puzzle, sumoku sudoku, sudoku puzzels, sudoku game, sudoku puzzle books, daily killer sudoku, daily sudoku killer, sudoku puzzles, sudoku for kids, hard sudoku puzzles, times killer sudoku solutions, super sudoku, daily sudoku, game sudoku, times puzzles killer, sudoku uk, usa today sudoku, play sudoku game, the daily sudoku, sudoku billions, sudoku x wing, lovatts sudoku, sudoku k, sudoku name, how to solve sumoku puzzles, guardian sudoku, guardian killer sudoku, telegraph killer sudoku, sudoku cage, sudoku sudoku, times hard killer sudoku, killer sudoku solutions, telegraph sudoku, daily sudoku puzzle, the sudoku killer, zero killer sudoku, sudoku quest, hard killer sudoku, sum doku, simple sudoku puzzle. I hope you enjoy these puzzles. Best regards, Basford Holmes