Shuzzles · ShudokuTuesday, 15 September 2026
DiabolicalSwordfish, XYZ- and W-Wings, unique rectangles. Still pure logic — but only just.
26 clues · difficulty rating 440 · 60 logical stepsTechniques: Pointing Pair/Triple, Simple Colouring, XYZ-Wing ×2, W-WingPinch points: 4 (moments with only one move available) · average choices per step 5.6
shuzzles.co.uk/shudoku/2026-09-15/diabolical/