Collins Big Book of Sudoku Book 3
A bumper collection of easy, medium and difficult Su Doku puzzles to test your mental dexterity, powers of logic and deduction. 100 easy, 100 medium and 100 hard puzzles. Solutions easily found at the back of the book.
Keep your mind sharp and test your powers of deductive reasoning. Ideal for whiling away those long commutes, travelling on
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