#sudoku #SudokuSleuth Today's Puzzle: It may only be me, but I have not seen the double sandwich sums before! It plays fantastically as a fusion with Dutch flat mates. Link to Play: Dutch Flat Mates (Double Sandwich Sums) by Flinty https://tinyurl.com/SudokuSleuthDutchFlatDoubleSan Rules: 1) Normal Sudoku rules apply 2) 5's live in Dutch Flats = All 5's in the grid must have a '1' directly above it or a '9' directly below it. It may have both, but it doesn't need both. 3) Double Sandwich Sums = Digits 1, 5, and 9 are crusts. An outside clue gives the sum of the digits sandwiched between the two closest crusts to the clue in its row or column. Chapters: 00:00:00 Intro 00:00:50 Rules 00:04:05 Solve 00:24:27 Outro Patreon Support: Support this channel by commenting on the video, liking it, or subscribing. You can also generously support the channel directly on Patreon, https://www.patreon.com/SudokuSleuth