Logic Masters Deutschland e.V.

Rules:
Normal sudoku rules apply.
Killer Cages: digits within a cage must sum to the number in the upper left corner and cannot repeat.
Arrows: digits on an arrow must sum to the attached circle
House Numbering: shade nine cells, such that there is one shaded cell per house (row/column/box), and the digit in the first cell of each house gives the position of the shaded cell in that house. Each digit appears in exactly one shaded cell. Cell positions in boxes are numbered left to right, top to bottom.
Among those shaded cells there are exactly:
- 3 doublers, which count as double their value;
- 3 halvers, which count as half their value;
- 3 normal digits.

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