Tuesday, 18 August 2026

4 puzzles · every one solvable by logic alone

Shuzzles · ShudokuTuesday, 18 August 2026

ToughTriples, X-Wings, Y-Wings and colouring. Expect to work for every cell.

28 clues · difficulty rating 269 · 56 logical stepsTechniques: Naked Pair, Box/Line Reduction, Simple ColouringPinch points: 5 (moments with only one move available) · average choices per step 5.0

shuzzles.co.uk/shudoku/2026-08-18/tough/

Why this is a Tough

Triples, X-Wings, Y-Wings and colouring. Expect to work for every cell.

Rating: 269
Clues: 28
Logical steps: 56
Pinch points: 5one move only
Avg. choices: 5.0per step
Hardest step: Simple Colouring

Techniques the solve needs

Every technique, explained →

Difficulty is measured by solving the puzzle the way a person does and watching how hard it pushes back — never by counting blank squares.

Print

Lays out as a proper A4 sheet — grid, difficulty and grading. Your print dialog can save it as a PDF.

Print this puzzleExactly as you see it All four of today'sOne sheet, plus solutions

It prints what is on the grid now, pencil marks and all — so you can take a half-finished puzzle with you. Reveal the solution first if you want the answer on paper.

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