Shuzzles · ShudokuFriday, 25 September 2026
DiabolicalSwordfish, XYZ- and W-Wings, unique rectangles. Still pure logic — but only just.
28 clues · difficulty rating 430 · 59 logical stepsTechniques: Box/Line Reduction ×2, Naked Pair, Pointing Pair/Triple, Simple Colouring, W-WingPinch points: 4 (moments with only one move available) · average choices per step 5.8
shuzzles.co.uk/shudoku/2026-09-25/diabolical/