Shuzzles · ShudokuWednesday, 16 September 2026
DiabolicalSwordfish, XYZ- and W-Wings, unique rectangles. Still pure logic — but only just.
26 clues · difficulty rating 430 · 62 logical stepsTechniques: Pointing Pair/Triple ×4, Box/Line Reduction, XYZ-Wing, W-WingPinch points: 8 (moments with only one move available) · average choices per step 6.8
shuzzles.co.uk/shudoku/2026-09-16/diabolical/