Logic Masters Deutschland e.V.

Another puzzle from the mind benders week. A very nice puzzle featuring Hiyoureaders. Leave a comment if you liked it.

Rules:

Standard sudoku rules apply: The digits 1 through 9 appear in every row, column, and box.

Killer-Cages: Digits in cages cannot repeat and must sum to the value shown in the upper left corner of the cage.

XV-Dominos: Cells separated by an X must sum to 10. Not all Xs are necessarily given (no negative constraint).

Kropki pairs: Digits in cells separated by a black dot are in a 2:1 ratio. Digits in cells separated by a white dot are consecutive. Not all dots are necessarily given.

Quadruples: Digits in a Quadruple circle must be placed at least once in the four cells touching that circle.

Skyscraper rules: a clue outside the grid gives the number of digits that can be seen from the clue's perspective in its row/column. Higher digits obstruct the view, i.e. lower digits placed anywhere behind higher digits do not contribute to the skyscraper sum in that direction.

play on sudokupad