Logic Masters Deutschland e.V.

Another tentropy coloring puzzle but this time with squishdoku. Set it months ago just kept forgetting to upload. I hope you enjoy!

Rules:

• Squishdoku: Place the digits 1 through 9 once each in every 3x3 box, with no repeats in any row or column. Cells on region borders (dashed lines) are shared between multiple boxes.
• Tentropy Lines: Every set of 4 adjacent digits on a line must contain a digit from each of the X-pair (ten-pair) subsets of {1,9}, {2,8}, {3,7}, and {4,6}. A 5 may not appear on a tentropy line. Digits on a line may repeat if allowed by other rules.
• Little Killers: Numbers outside the grid are the sum of the digits pointed to along the indicated diagonal. Digits are allowed to repeat along those diagonals as normally allowed by the other rules.
• The X separates digits that sum to 10.

All feedback (positive or critical) appreciated!