Killer Sudoku: 1,000 + New sudoku killer 10x10: Logic puzzles medium - hard levels (Paperback)

Positive game. For adults. 6 puzzles per page. 500 killer sudoku puzzles medium levels. 502 killer sudoku puzzles hard levels. Thick paper. 8.5 X 11

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Basford Holmes

Killer Sudoku: 1,000 + Mega jigsaw killer sudoku 6x6 : Logic puzzles hard levels (Series #47) (Paperback) - Yahoo Shopping

900 Medium to Very Hard Sudoku Size by Puzzler, Hardcore

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