400 Tridoku Sudoku Puzzles: Hard to Very Hard Triangular Sudoku Puzzles by Mindf
21,71 €
400 Tridoku Sudoku Puzzles. Short Title 400 Tridoku Sudoku Puzzles. Series Tridoku Puzzles. Subtitle Hard to Very Hard Triangular Sudoku Puzzles. The puzzle consists of nine large triangles; the numbers 1 through 9 must be placed into the triangular cells of each large triangle.
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