Surplus Sudoku by Thomas Snyder
[This is a repost from our archives with new notes at the top (original post here): Where Deficit Sudoku (Udoku) focuses on “naked single” type information with the altered rules, my own counterpart variation of Surplus Sudoku (Ssudoku) focuses on “hidden single” type information as all large regions must have one of each number (and one duplicate). This mid-week puzzle was trying to be on the easier end to be a parallel entry point into Surplus Sudoku that the Tuesday puzzle was for Deficit Sudoku.]
or solve online (using our beta test of Penpa-Edit tools)
Theme: Double Diagonals
Rules: Standard Surplus Sudoku rules, with numbers from 1-8.
Estimated Difficulty*: 2.5 stars
Time Standards (highlight to view): Grandmaster = 1:45, Master = 2:45, Expert = 5:30
Solution: PDF