Anti-Diagonal Sudoku by Bill Murphy
(This post is part of the Genuinely Approachable Sudoku (GAS) series.)
Unlike in a traditional Diagonal puzzle, repetition along the diagonal lines is the goal in this Anti-Diagonal Sudoku.
or solve online (using SudokuPad)
Author/Opus: This is the 175th puzzle from Bill Murphy, part of the Genuinely Approachable Sudoku (GAS) team.
Rules: Standard 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, exactly three different numbers will appear along each marked diagonal.
GAS Time Standards (highlight to view): Two party hats (🎩🥳): 7:30; One party hat (🥳): 15:00. All other solvers earn a 🦕: Let’s Up The Antetonitrus.
Thomas Hits the GAS (highlight to view): 2:17, with SudokuPad replay file shared as a download for now (requires loading via settings menu with improvements expected before people should use this regularly).
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 Daily GAS discussion post on the GMPuzzles Discord. Not a member of the Discord? Click this link for basic access.
The constraint isn’t particularly well-explained here, and I took it to mean that along any diagonal there will be three digits that are repeats of others (for example, 123456123, or 123453783).
Anyway I peeked at the solution to see that what was actually meant is that each diagonal only has three distinct digits along it, and restarted for a 7:46.