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- Normal Sudoku Rules: Fill each row, column, and 3x3 box with the digits 1-9 once each. - Black Kropkis: Digits in cells separated by a black dot have a 1:2 ratio. - Killer Cages: Digits in cages must not repeat and must sum to the number in the upper left corner of the cage (if present). - Quadruple Circles: The four digits in a circle must be appear in the cells around the circle.
The City of Dreaming Books
By lgastako
- Normal Sudoku Rules: Fill each row, column, and 3x3 box with the digits 1-9 once each. - Black Kropkis: Digits in cells separated by a black dot have a 1:2 ratio. - Killer Cages: Digits in cages must not repeat and must sum to the number in the upper left corner of the cage (if present). - Quadruple Circles: The four digits in a circle must be appear in the cells around the circle.