Logic Masters Deutschland e.V.

One year ago the Dutch Thermo was introduced and now it has returned!

Normal Sudoku rules apply, place the digits 1-9 in each row, column, and box.

Dutch Thermos: Digits along the orange thermos exist in two distinct sets which alternate positions along the line, both sets increase in value from the bulb end but are independent from each other regarding their increasing values, also all digits on the line must have a difference of at least four between each adjacent digit regardless of which set they belong to.

XV Pairs: Digits separated by an X sum to 10. Digits separated by a V sum to 5.

Anti-Knight: Cells that are a Knight's move apart (in chess) may not contain the same digit.

Solve on CTC