Book logic Sudoku. 400 collection puzzle.: Very hard levels. Calcudoku - Kakuro - Jigsaw killer - Tridoku. Holmes presents to your attention the national collection of classic sudoku. (plus 250 sudoku and 250 puzzles that can be printed).
(Mix Classic Sudoku, #5)
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Book logic Sudoku. 400 collection puzzle.: Very hard levels. Calcudoku - Kakuro - Jigsaw killer - Tridoku. Holmes presents to your attention the national collection of classic sudoku. (plus 250 sudoku and 250 puzzles that can be printed).
(Mix Classic Sudoku, #5)
