Sum Nine Sudoku by clover!
In this Sum Nine Sudoku, some pairs of cells that sum to nine are marked with diamonds. Can you find your way around the grid to the one solution?
or solve online (using SudokuPad)
or solve online (using Penpa-Plus; originally posted as a backup)
Author/Opus: This is the 42nd puzzle from Clover, 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, if a diamond is given between two adjacent cells, then the numbers in those cells must add to 9. (Note: not all diamonds are given; adjacent cells without a diamond may or may not add to another value than 9.)
GAS Time Standards (highlight to view): Two party hats (🎩🥳): 6:00; One party hat (🥳): 11:00. All other solvers earn a 🦕: nonogonal Nyasasaurus.
Thomas Hits the GAS (highlight to view): 2:46, with Penpa Plus replay this time.
Solution: PDF; solving video with explanation to be added later from GAS team.
Note: Follow this link for other less common variations of Sudoku.
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