Normal sudoku rules apply: place the digits 1 to 9 once each in every row, every column, and every 3x3 box.
Anti knight: two cells a chess knight's move apart cannot contain the same digit.
Thermometers: digits along each thermometer strictly increase starting from the bulb end.
Skyscrapers: each digit is the height of a building. A clue outside the grid gives the number of buildings visible when looking into that row or column from that side. A taller building hides every shorter building behind it.
Lösungscode: Enter the digits of row 5 (left to right), followed by the digits of column 9 (top to bottom). 18 digits in total, no spaces.