Interval Sums Sudoku by clover!
(This post is part of the Genuinely Approachable Sudoku (GAS) series.)
In an Interval Sums Sudoku, the numbers in the first two cells next to an outside clue tell you the range of the cells that add up to the clued sum.
or solve online (using SudokuPad)
Theme: Home on the Range
Author/Opus: This is the puzzle from clover!, 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). Clues outside the grid indicate the sum of the numbers from position A to position B (inclusive) in that row or column, where A and B are the first two numbers from the direction of the clue, regardless of which number is larger. For instance, if the rightmost two numbers in row 7 were 5 and 7 (or 7 and 5), then the sum of the numbers in the 5th, 6th, and 7th positions from the right in that row would equal 6, the value of the outside clue.
GAS Time Standards (highlight to view): Two party hats (🎩🥳): 6:30; One party hat (🥳): 12:00. All other solvers earn a 🦕: wide-ranging Willinakaqe.
Thomas Hits the GAS (highlight to view): 1:50, 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.