Granny Grid: A Free Crochet Sudoku Game

Granny Grid is a free crochet game that plays like sudoku, but with yarn. Instead of numbers, you fill a granny square blanket with balls of yarn so every colorway shows up once in each row, once in each column, and once in each granny square. It starts small and easy, then grows into a full nine-square blanket as you get the hang of it.

Granny Grid crochet sudoku game board with balls of yarn filling a nine-square granny blanket

Play in the Briana K Stitch app

I made these games for the times you need a break from yarn but don’t want to take a break from yarn. Like sitting in the doctor’s office without your project bag. Granny Grid is the one to grab when you want something that keeps your brain busy.

You can play it right here on the blog, or in the Briana K Stitch app.

Play Granny Grid

How to play

The goal is simple. Fill every empty spot in the blanket so each colorway shows up once in every row, once in every column, and once in every granny square. Some balls of yarn come with the blanket to get you started.

Level 1 of Granny Grid, a small four-square blanket with some balls of yarn already in place

Tap a square, then pick a yarn

Tap an empty spot and it gets a dark outline. Then tap a ball of yarn in the row under the blanket to drop it in.

An empty spot in the Granny Grid blanket outlined and ready for a ball of yarn

Rather work one color at a time? Tap a ball of yarn first, then tap every spot you want it in. Tap the ball again to put it down. The little number on top of each ball in that row tells you how many of that colorway you still need to place.

A Raspberry ball of yarn placed in the Granny Grid blanket

Watch for dashed rings

If two of the same colorway land in one row, column, or granny square, both get a dashed ring, and the tip line above the blanket tells you which color doubled up. Tap the spot and pick a different yarn, or tap Erase. The balls that came with the blanket stay put, so you’ll always be fixing one of yours.

Two Raspberry balls of yarn in the same row with dashed rings showing the mistake

Use Notes when you’re not sure

Tap Notes, pick a spot, then tap the yarn colors it might be. Each one shows up as a small dot, so you can keep track of your options without committing. Tap a color again to rub it out. Tap Notes again to go back to placing yarn.

Notes turned on in Granny Grid with small colored dots marking possible colorways in empty spots

Erase, Undo, and Hint

Erase takes out a ball you placed. Tap the spot, then Erase.
Undo takes back your last move.
Hint fixes a wrong ball or fills in a spot for you when you’re stuck.
The restart arrow at the top clears the board for a fresh start, and Undo brings your balls back if you change your mind.

Finish the blanket

Once every spot is filled with no doubles, every square gets joined and you’ll see how many hints you used. Tap Next level to keep going.

Granny Grid level complete message reading Every square joined with a Next level button

The blanket grows as you go

Granny Grid starts you off easy and builds from there:

Levels 1 to 3: a small four-square blanket with four colorways.
Levels 4 to 9: a six-square blanket with six colorways.
Level 10 and up: the full nine-square blanket with nine colorways.

Level 4 of Granny Grid with a six-square blanket and six yarn colorways

Through level 30, every puzzle can be solved without guessing, so if you’re stuck, there’s always a next move. Notes help you find it.

Level 12 of Granny Grid with the full nine-square blanket and nine yarn colorways

Real yarn colors

Every colorway in the game is a real Herrschners Worsted 8 shade: Raspberry, Daffodil, China Blue, Lime, Eggplant, Blaze, Teal, Walnut, and Periwinkle. Tap the gear at the top to see the colorways for your level by name. That’s also where you can turn the sound on or off, and turn the numbers on the yarn on or off. The numbers are handy if some of the colors look alike to you.

Granny Grid settings showing sound, numbers on the yarn, and the level's Herrschners Worsted 8 colorways

Want a bigger board? Tap the Fill the window button at the top. And if you ever need a refresher, tap How to play under the blanket.

The How to play section of Granny Grid explaining the goal, notes, and hints

Your spot is saved

Granny Grid saves your place as you go. Close it in the middle of a level and you’ll pick up right where you left off.

FAQ

Is Granny Grid free?

Yes. It’s free to play right here on the blog and in the Briana K Stitch app.

Do I need to know how to play sudoku?

No. The first few levels use a tiny four-square blanket with just four colors, so you learn as you go.

What if I get stuck?

Tap Hint. It fixes a wrong ball or fills in a spot for you. Notes help too, so you can mark what each spot might be.

Can I play on my phone?

Yes. It works on your phone, tablet, or computer.

Are the yarn colors real?

Yes. Every colorway is a real Herrschners Worsted 8 shade.

Want more games?

The Briana K Stitch app has 20 crochet games, from matching and sorting to word searches and solitaire, plus patterns and tools. It’s free to sign up.

Get the app

Pin Granny Grid for Later

Save your favorite to your crochet board so a round of Granny Grid is right there the next time you need a break.