Shuzzles · ShudokuSunday, 6 September 2026
DiabolicalSwordfish, XYZ- and W-Wings, unique rectangles. Still pure logic — but only just.
28 clues · difficulty rating 430 · 59 logical stepsTechniques: Pointing Pair/Triple ×4, Simple Colouring, W-WingPinch points: 9 (moments with only one move available) · average choices per step 4.5
shuzzles.co.uk/shudoku/2026-09-06/diabolical/