Saturday, 15 August 2026

4 puzzles · every one solvable by logic alone

Shuzzles · ShudokuSaturday, 15 August 2026

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

29 clues · difficulty rating 418 · 65 logical stepsTechniques: Pointing Pair/Triple ×4, Naked Pair ×4, Box/Line Reduction, Simple Colouring ×3, Y-WingPinch points: 6 (moments with only one move available) · average choices per step 6.9

shuzzles.co.uk/shudoku/2026-08-15/tough/

Why this is a Tough

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

Rating: 418
Clues: 29
Logical steps: 65
Pinch points: 6one move only
Avg. choices: 6.9per step
Hardest step: Y-Wing

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.

Timer

00:00