Logic Masters Deutschland e.V.

Rules

• Sudoku: Place the digits 1 to 9 once each in every row, column, and region.
• Cages: Digits may occur in cages at most once, and the digits in a cage sum to the indicated total.
• Indexing: All the cells in cages are both row indexing and column indexing. This means that if the digit in a cell (R,C) in row R and column C is D, and the cell (R,C) is in a cage, then the digit in cell (D,C) is R and the digit in cell (R,D) is C.

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• Sudokupad

Note

The title of this puzzle is an homage to Philip Newman's fantastic puzzle White Room, in which the killer cages covered only 18 cells.