Scattered Quadruples Sudoku by Bill Murphy
(This post is part of the Genuinely Approachable Sudoku (GAS) series.)
While this whole grid is scattered apart, there are some “plus” signs within it that might add up to the key logic as you put things back together.
or solve online (using SudokuPad)
Author/Opus: This is the 110th puzzle from Bill Murphy, part of the Genuinely Approachable Sudoku (GAS) team.
Rules: Insert a number from 1 to 9 into each cell so that no number repeats in any row, column, or bold region. Also, the gray cells must contain each of the numbers from 1 to 9 exactly once. The set of four numbers in a white circle must appear in the four surrounding cells.
GAS Time Standards (highlight to view): Two party hats (🎩🥳): 8:00; One party hat (🥳): 15:00. All other solvers earn a 🦕: An Assembly of Abydosaurus.
Thomas Hits the GAS (highlight to view): 3:28, 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; solving video with explanation to be added later from GAS team.
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.