Logic Masters Deutschland e.V.

This puzzle uses the the Entropic Whispers constraint by gdc and the Different Difference constraint by Marty Sears. Special thanks to Scojo for hosting the “Guess Who?” challenge to set an anonymous puzzle in your own style.

Rules:

• Sudoku: Place the digits 1-9 once each in every row, column, and 3x3 box.
• Different Difference: Every pair of adjacent digits on a red different difference line must differ by a different amount. Eg: if there's a 3 next to a 5 on the line, there can't be a 7 next to a 9 anywhere on the same line.
• Entropic Whisper: If two digits are one or two steps apart on an orange entropic whisper line, their difference is 3 or more. Eg: if the r5c2 is 5, the surrounding 4 cells on the line (in the same column) could not contain 3, 4, 5, 6 or 7.
• Kropki-X Dots: Digits separated by a black dot either sum to 10 or are in a 2:1 ratio.
• Sandwich Sums: Numbers on the outside give the sum of the digits between 1 and 9 in that column or row.

Streamers have permission to use this puzzle.

Play in SudokuPad

Play in SudokuPad (Cosmetic Lite Version)