Shuzzles · ShudokuFriday, 2 October 2026
DiabolicalSwordfish, XYZ- and W-Wings, unique rectangles. Still pure logic — but only just.
28 clues · difficulty rating 430 · 57 logical stepsTechniques: Pointing Pair/Triple, Box/Line Reduction, Naked Pair, Unique RectanglePinch points: 8 (moments with only one move available) · average choices per step 5.3
shuzzles.co.uk/shudoku/2026-10-02/diabolical/