Printable hard Sudoku — 6 Free Puzzles

Six free printable hard 9×9 sudoku puzzles with a full answer key, refreshed daily. Press Print Puzzles and choose Save as PDF to get a free sudoku PDF — no sign-up, no watermark.

All Printables

Puzzle 1 — Hard

279675341187423697532264149

Puzzle 2 — Hard

76929412394662326761548715

Puzzle 3 — Hard

13869826865353591128912571

Puzzle 4 — Hard

246472161759363958397923627

Puzzle 5 — Hard

74813511678764284227367319

Puzzle 6 — Hard

172463918322745238486237382

Answer Key

Solution 1

185329467942867153763415829618972534379584612254136978891753246527648391436291785

Solution 2

458716392396452871712938564537189426649527183281643759925374618163895247874261935

Solution 3

912463785786925143543178926897614532261357894435289671124896357379541268658732419

Solution 4

921638745536417892487529136178254963295386417643791258319875624754962381862143579

Solution 5

748156923926843571351972486592714638873569142164238795439681257217395864685427319

Solution 6

163748259458269371792351468635172984214986537879435126321897645986524713547613892

About Today's Set

These hard puzzles were generated on 2026-10-10 and stay online so you can bookmark or share this page. Saturday is a hard grid: fewer clues, deeper logic chains, and zero guessing required. Every grid is programmatically verified to have exactly one solution — solvable by pure logic, never by guessing.

Prefer to solve on screen? Play sudoku online instead, try the daily challenge, or switch difficulty: printable easy sudoku · printable medium sudoku · printable hard sudoku.