---
title: "Printable Sudoku Generator, Easy to Expert | PuzzleBirch"
description: "Print sudoku puzzles with one solution each, graded by the techniques they need: easy to expert, one to six per page, with answer pages."
url: https://puzzlebirch.me/sudoku-generator/
---

[PuzzleBirch](https://puzzlebirch.me/) · Maker

# Printable sudoku generator

Fresh sudoku puzzles, each with exactly one solution, graded by the techniques you need to solve them. Print one to six to a page, with the answers on their own pages.

## How the puzzles are made and graded

Each puzzle starts as a complete, random grid. PuzzleBirch then removes digits in matching pairs (so the pattern of givens looks the same upside down), and after every removal it checks that a careful human solver could still finish the puzzle using only the techniques allowed for your level. A puzzle that logic can finish has exactly one solution, so every puzzle here is fair: no guessing, no second answer.

The level is the hardest technique the puzzle needs when you always use the simplest step available:

| Level | Hardest technique needed |
| --- | --- |
| Easy | Hidden and naked singles only |
| Medium | Pointing pairs, box–line reduction, naked or hidden pairs and triples |
| Hard | X-wing, XY-wing or swordfish |
| Expert | Skyscraper, two-string kite, XYZ-wing or simple colouring |

A puzzle is kept only if it needs a technique from its own level, so a Hard puzzle really does need an X-wing or similar somewhere. Stuck on one? Type it into the [sudoku solver](https://puzzlebirch.me/sudoku-solver/) for a hint that names the technique.

**Found a puzzle site full of pop-ups?** Free printable-puzzle download sites are often thick with ads and redirects. [WebTraceCheck](https://webtracecheck.com/) lets you open them in a cloud browser that is deleted afterwards, so none of it touches your own computer.

## Questions

**How do I print the answers?**

Leave “Print answer pages” ticked. The puzzle pages print first, then the answers on separate pages in the same layout. Choose “Save as PDF” in the print window to keep a copy.

**Can I print the same puzzles again later?**

Yes. The same set number, level and layout always make the same puzzles. Note the number shown on the printed page.

**Why do Hard puzzles sometimes look easy?**

Most of any puzzle falls to simple steps; the hard technique may be needed only once, often around the middle. That one step is what makes it Hard.