Shuzzles · ShudokuSunday, 30 August 2026
DiabolicalSwordfish, XYZ- and W-Wings, unique rectangles. Still pure logic — but only just.
28 clues · difficulty rating 439 · 58 logical stepsTechniques: Pointing Pair/Triple, Box/Line Reduction, Simple Colouring, Y-Wing, W-WingPinch points: 11 (moments with only one move available) · average choices per step 4.1
shuzzles.co.uk/shudoku/2026-08-30/diabolical/