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Sudoku Ripple Effect - 200 Hard to Master Puzzles 9x9 (Volume 15)
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Barnes and Noble
Sudoku Ripple Effect - 200 Hard to Master Puzzles 9x9 (Volume 15)
Current price: $7.49
Barnes and Noble
Sudoku Ripple Effect - 200 Hard to Master Puzzles 9x9 (Volume 15)
Current price: $7.49
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Ripple Effect
(also known as "
Hakyuu
", "
Hakyuu Kouka
Hakyukoka
Seismic
") is a logic puzzle published by Nikoli. The puzzle consists of a rectangular grid of any size divided into polyomino sections called "rooms". Each room must be filled with each of the numbers from 1 to the number of cells in the room. If two identical numbers appear in the same row or column, at least that many cells with other numbers must separate them.
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