Logic Masters Deutschland e.V.

Standard sudoku rules applies. Fill the grid with numbers from 1 to 9 so each digit occurs exactly once in every row, column and 3x3 box.

Standard vx rules with negative restraint. Cells seperated by v sum to 5, by x sum to 10. All possible vx are given.

Greater than symbol, not v, indicates which digit is larger. Not all symbol is shown(obviously)

This puzzle is made by Old Miles from China. Holiday special, hope you like it. Old Miles just happened to find that normal vx looks to boring, maybe multiple solution, so he put some greater than in it. Also, if any stitch up rules works like this, plz tell me, I love those.(I don't think there's any)

comment 2022: looking back, I think this is the one where i started to think about how to sstitch up rules. even though I will never like stitching up for the sake of sole solution, i have to admit stitching up is one way to form a new rule. i know i have to find a way to think of a stitch up rule that i like. thi one is basically a one-of-two. i didn't thhink that much of the overlap. anyway, i don't expect an overlap in a between cell rule. thankfully, holiday special is when i slack off. but it sertainly point one direction for my future puzzles.