Logic Masters Deutschland e.V.

Here is my latest puzzle. It's a bit more challenging than my usual GAS/1-star puzzles, but I hope just as enjoyable. As always, feedback is welcomed and encouraged, so let me know what you think in the comments below.

• Normal Sudoku Rules: Fill each row, column, and 3x3 box with the digits 1-9 once each.
• Extra Regions: Every shaded region must also contain the digits 1 through 9 without repeats.
• Positive Diagonal/Negative Diagonal: Digits along the positive diagonal (R9C1 to R1C9) must be unique. Digits along the negative diagonal (R1C1 to R9C9) must be unique.
• X/V: Cells separated by X must sum to 10. Cells separated by V must sum to 5.
• White Kropkis/Black Kropkis: Digits in cells separated by a white dot are consecutive. Digits in cells separated by a black dot have a 1:2 ratio.

NB. Wherever the lines overlap, the digit appears in both regions, eg. the central square of the puzzle (the center of box 5) is in both the yellow region and the green region and the upper left cell in box 5 is in both the purple region and the red region, etc.

Play online using Sudokupad