Logic Masters Deutschland e.V.

Standard Sudoku rules apply.

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

Thermometers: Digits on a thermometer must strictly increase from the bulb.

Skyscrapers: Each digit is a skyscraper with height equal to its value. Clues outside the grid show the number of skyscrapers seen that are visible from that direction, bigger skyscrapers hide smaller ones behind them (e.g. a 9 as the first digit from that direction would hide every other digit behind it). If there's a killer cage in that row/column then one of the clues will only count skyscrapers inside the cages and the other (on the opposite side from it) only skyscrapers outside of cages. (For those clues the in-cage and out-cage skyscrapers are treated as 2 separate entities that don't block each others vision)

Play on SudokuPad by Sven Neumann