Parity Lines Sudoku by Thomas Snyder
(This post is part of: “A Story of Self-setting Sudoku”.)
Today marks our 100th Mini Sudoku post on LinkedIn. If I had a paperclip for every time someone has played Mini Sudoku over that time, my guess is I’d have somewhere between 100 million and a billion paperclips? That seems pretty cool. (Note to self: never become a billionaire in the currency of paperclips.)

or solve online (using SudokuPad)
Theme: 100: A Big Celebration for a Mini Milestone
Author/Opus: This is the 606th puzzle from Thomas Snyder, aka Dr. Sudoku.
Rules: Insert a number from 1 to 9 into each cell so that no number repeats in any row, column, or bold region. Also, numbers in cells directly connected by a red line must alternate between even (2, 4, 6 , 8) and odd (1, 3, 5, 7, 9) numbers.
Estimated Difficulty: 2 stars
Solution: PDF.
Note: Follow this link for other less common variations of Sudoku.
Note 2: Comments on the blog are great! For a more interactive discussion, please also consider using our Twelve Months of Sudoku? post on the GMPuzzles Discord. Not a member of the Discord? Click this link for basic access.
