Shuzzles · ShudokuFriday, 9 October 2026
DiabolicalSwordfish, XYZ- and W-Wings, unique rectangles. Still pure logic — but only just.
26 clues · difficulty rating 430 · 59 logical stepsTechniques: Naked Pair, Pointing Pair/Triple, Y-Wing, XYZ-Wing, BUG+1Pinch points: 4 (moments with only one move available) · average choices per step 7.6
shuzzles.co.uk/shudoku/2026-10-09/diabolical/