Logic Masters Deutschland e.V.

I made this puzzle following Scojo's prompt to use regional constraints (as no repeats on the same clue type) along with tentropy lines.

• Select eight digits out of the digits 1 to 9 and fill the grid with them so each digit appears exactly twice and no digit repeats in any row, column or region.
• A circle outside the grid has a value equal to the sum of the digits on the first X cells in the corresponding row/column, where X is the digit of the cell nearest to the clue. No two circles may have the same value.
• Grid cells have a value equal to the digit in them. Every set of 4 adjacent values along the tentropy line must contain one value from each of the sets 19, 28, 37, 46. The value 5 may not appear on the line.
• Values may not repeat on the line.
• Digits joined by a white dog are consecutive.

Online in Sudokupad

See also:

• what did i get myself into?
• on the eighth day
• Rank Up 20.aq - Dutch Flat Mates
• diploptic triptych
• not my trip error