What's the Sudoku Packing Method? Start here.

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If you've been on my Instagram lately, you've probably seen me talking about the Sudoku Packing Method on repeat. I keep getting the same messages in my DMs: "Okay, but where do I even start?" So I figured it was time to break it all the way down, from what this method actually is to the exact steps I take before a single item goes in my suitcase.

If you missed my beach vacation version of this method, you can check that post out here for a real-life example. But this post is the foundation, the one I wish I had before I figured this whole thing out through trial and error (and a few overpacked suitcases).

What is the Sudoku Packing Method exactly?

The Sudoku Packing Method is a packing strategy that borrows its logic from, well, Sudoku! Instead of packing complete outfits, you choose 9 pieces of clothing, 3 tops, 3 bottoms, and 3 layers, and arrange them into a 3x3 grid like this:

Top, Bottom, Layer

Layer, Top, Bottom

Bottom, Layer, Top

Each row is a complete outfit on its own. But here's the part that makes it genuinely different from a regular packing list: because every piece has to work with every other piece, you're not just getting 3 outfits. You can also read the grid vertically (3 more outfits) and sometimes diagonally, too. That's 9 pieces working together to create 6, and sometimes more, completely different looks.

The real magic isn't the grid itself. It's the rule behind it: nothing gets packed unless it plays well with almost everything else. That one requirement does all the heavy lifting.

Why This Method Actually Works

I've tried a lot of "pack less" advice over the years, and most of it comes down to a number: bring 10 items, bring a carry-on only, bring one color story. Helpful in theory, but it never told me how to choose those items so they'd actually work together.

The Sudoku Packing Method solves that problem because it's structural, not just numerical. Every top has to work with every bottom and every layer, so there's no "just in case" piece hiding at the bottom of your suitcase by day 3. If something doesn't earn its spot in at least a few combinations, it doesn't make the cut. Simple as that!

It also takes the decision fatigue out of actually getting dressed on your trip. Once your grid is built, you're not standing over an open suitcase every morning. You're likely just picking a top, a bottom, and a layer if you need it!

Where to start: My thought process

Here's the part I get asked about the most. Building your first grid can feel a little overwhelming, so I like to work through it in this order:

PICK A COLOR PALETTE AND BUILD AROUND IT

Before you add a single item, decide on a color palette. Neutrals, like white or denim, are your best friend here because you can pair them with anything without a second thought. I usually stick to 2-3 base colors, for instance: white, beige, and blue.

SPICE UP YOUR OUTFITS WITH YOUR ACCESSORIES

If you’re worried your outfits might look too plain because of the color palette, that’s where accessories come in. Scarves are great layer pieces that don’t take up much space but can change up a look instantly. You can also use handbags and shoes to add a pop of color to a simple outfit, too.

Start With Your Bottoms

I like to choose my 3 bottoms first because they're usually harder to make versatile. You can consider picking pieces that are different from each other, like a wash of denim, linen pants, and a skirt, so that your grid doesn't end up feeling too repetitive.

Choose Tops That Work Double Duty

Your 3 tops should preferably be able to pair with all 3 bottoms. Or at least with 2 bottoms, if not all 3. If a top only works with one bottom, it's probably not grid-worthy. I like picking at least one piece that can be dressed up, like a silk cami or a buttoned-down shirt, just so that you have a nicer option.

What’s even better are tops that can be worn more than one way, like if they’re reversible or can be worn front to back, because that can easily maximize the combinations even more.

Add Layers Last

Layers are what stretch this method the furthest. A cardigan, a blazer, or a lightweight jacket can transform the same top-and-bottom combo into something completely different depending on the setting. I always try to include at least one layer that works for both warm and cool moments, since travel weather is rarely predictable.

And don’t forget scarves are wonderful layers to pack, too, because again, they don’t take up much space but make a huge difference to changing up a look sometimes.

Lay It All Out Before You Pack

It may seem silly but it’s actually helpful to physically lay your 9 pieces out in the grid to see if everything actually goes with each other. If you spot a piece that isn't earning its place, swap it out!

Round Out With Shoes and Accessories

Once your grid is locked in, add in your shoes, bags, and any other accessories. I try to keep it to 2-3 pairs of shoes and bags max, and let jewelry do the work of making each outfit feel a little different.

A few things I've learned along the way

Don't skip the "does it work with everything" test. It's tempting to throw in a piece you love, even if it only pairs with one other item. Be honest with yourself here.
Neutrals aren't boring, they're strategic! The more your base pieces blend, the more room you have to have fun with one statement piece.
If possible, prioritize clothing that you can easily handwash. Since you're likely re-wearing pieces on the same trip, hand-washable fabrics mean you can rinse something out in the hotel bathroom sink, hang it to dry overnight, and wear it again the next day. It's a small thing that makes a 9-piece grid stretch even further.
This method isn't just for trips. I've started applying the same grid logic to shopping for new pieces! If it doesn’t work with several pieces in my closet, it’s a no-go.
It gets easier every time. My first grid took me a (long) while to plan. But now, I can build one very quickly!

The Sudoku Packing Method won't make your suitcase any bigger, but it will change how you think about what goes in it. Once you build your first grid, I promise you'll never go back to packing "just in case" outfits again.

If you give this a try, tag me on Instagram, I love seeing everyone's grids!

As always, thank you for stopping by Happily Ever Style.

xoxo, Tricia

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