$SafeCracker Puzzle 40 wooden brain teaser by Creative Crafthouse, top view on white, showing four concentric rings of engraved number tiles around a center hub marked SafeCracker Puzzle 40$
$Safecracker 40 wood puzzle resting in an open hand for scale, 4.4 inches across, roughly the size of a palm, with a caption noting it arrives fully assembled with a solution sheet$
$Safecracker 40 rotating-ring puzzle on a blueprint-style background, a heritage graphic referencing a 1911 combination-lock design, with text noting one solution where every column sums to 40$
$Close-up of the Safecracker 40 center medallion engraved SafeCracker Puzzle 40, showing surrounding number tiles, solid maple with a cherry finish and engraved rather than printed markings$
$Labeled diagram of the Safecracker 40 puzzle pointing out the rotating rings, a single column, the engraved numbers, and the center hub, with an example column adding 13 plus 15 plus 2 plus 10 to reach 40$
$Safecracker 40 wooden puzzle on a dark surface beside a difficulty scale marking it Intermediate, described as the approachable Safecracker$
$Edge-on side view of the Safecracker 40 puzzle showing its low stacked-ring profile, labeled 4.4 inches across and 0.75 inch thick, a flat wooden disk$
$Comparison of the larger Safecracker 50 and the smaller Safecracker 40 side by side, noting the 40 has four rings, columns summing to 40, and over 65,000 permutations, made by Creative Crafthouse in Hudson, Florida$
$Safecracker 40 wooden puzzle styled as a gift on a wood table with a ribbon-tied kraft box, eucalyptus, and warm string lights, presented as a handmade gift$

Safecracker 40 | Wooden Math Logic Puzzle

In stock, ready to ship

$26.49

Difficulty: Intermediate

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Add laser engraving(+$4.00)

Add a wood message card (+$4.95)

Your words, laser engraved on a 4 x 3 inch Baltic birch card and packed with this gift.

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Delivery and Shipping

Standard orders ship within 1 business day. Personalized items ship within 2 business days, and more detailed personalization, custom work, or larger orders may take longer.

Standard shipping is free on US orders over $99 (continental US only).

Description

Safecracker 40 is a one-piece, handcrafted wooden math and logic brain teaser for teens and adults. Made from maple with a cherry finish, it delivers a repeatable challenge in a pocketable form.

Goal: Align the wheels so each of the 16 columns equals 40 at the same time.

Size: 4.4 x 4.4 x 0.75 in. Deep laser engraved numbers and text will not fade. Add personalized engraving on the back.

Difficulty: Intermediate. Ideal for solo puzzling, travel, and quick office breaks. Handmade in the USA; see more challenges in the Math Puzzles collection.

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Product Specifications

Dimensions: 4.1 × 4.1 × 0.625
Materials: Wood
Difficulty Level: Intermediate
Age Range: Tweens (9-12 years), Adults (18+ years), Teens (13-18 years), Seniors (65+ years)
Solve Time: 1 hour
Piece Count: 1
What's Included: Safecracker 40 puzzle (1), Instructions and solution sheet (1)
Gift Occasions: Christmas, Stocking Stuffer, Father's Day, Mother's Day
Personalization Available: Yes
Puzzle Type: Math, Logic
Category: Brain Teaser Puzzle
Availability: In Stock

Personalize It!

Did you know we can add a custom laser engraving to every puzzle and game? Well, we can. Add a personal touch to your gift with a name or message.

Personalized laser engraving

a puzzle being laser engraved with personalized text by creative crafthouse

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Customers praised this wooden math logic puzzle as "beautifully crafted" and "wonderfully challenging." The puzzle engages minds with math-based brain teasers and includes solution sheets. Most loved the quality and fun challenge, though some found it smaller than expected. Popular as a gift for puzzle enthusiasts and math lovers.

Puzzle (positive)Craftsmanship (positive)Grandson (positive)Challenge (positive)Gift (positive)

5 stars: 685 (90%)
4 stars: 51 (7%)
3 stars: 20 (3%)
2 stars: 5 (1%)
1 star: 4 (1%)

Obwohl ich bereits Versandkosten und Zollgebühren gezahlt habe bzw mir berechnet wurden, musste ich nochmal Zollgebühren über 10,47 € zahlen.

Shipped out fast and arrived in excellent condition. Definitely challenging for me and everyone else should try it as well. Really glad I have this in my possession.

I am very disappointed! This is so small that it fits in the palm of my hand! I was going by the picture, which is very deceiving; I was an idiot for not reading everything! I would not recommend this!

Exactly what I wanted. The puzzle is well made. Fast delivery. I highly recommend for anyone who loves a challenge!

Fast shipping. Nice wood puzzle for Grandson Christmas gift.

Looks really good & is smaller than expected but it looks good. It’s a gift so I haven’t tried it yet. It wasn’t shipped in a little box so I was worried that it may have been damaged in shipping, but it appears okay.

The Safecracker 40 is a terrific puzzle. It reflects craftsmanship and thought. I purchased this for my grandson, "Brainsteen". It definitely piqued his interest ( 17 yr. old Junior = GPA 4.44).
He had to take it with him to Robotics ( he loved it & sent me the picture).
Of course I ordered another quality puzzle from this awesome vendor! Thanks again...

The seller shipped it again when the first parcel got lost in the mail. I've now received it and the puzzle is just like it was described! I bought it as a gift for my dad who loves math puzzles so I'm sure he'll like this! Definitely would buy again from this shop :)

A little smaller than I anticipated but good quality. Haven’t been able to solve it yet but he loves it.

It was a little smaller than I thought it would be but that is my fault for not reading the dimensions. But honestly the size didn’t make a difference. Nicely made. Fun puzzle for the puzzle lovers that are hard to buy for! Will buy again!

Amazing!! Gave it to my techie coworkers. He loves it!!!

My husband loved it. He has been working in it since he got it. the quality is great and it arrived very quickly.

Great quality. Awesome game! Family are all perplexed. This will definitely be used a lot at our house. My daughter tried to sneak it off to university with her. Sorry babe, it’s staying here.

bought this for a good friend of mine, someone who really loves math lol it was a hit! they loved it

A challenging puzzle, I haven't tried it yet but my family has tried and got about 2 columns. The wheels turn smoothly and fits comfortably in my small hands. I will enjoy solving it.

Beautiful. Well Made. Amazing service. Exceptional product.

I am just tickled pink. This was a gift for my brain teaser loving husband for his birthday. It’s challenging to find him something he can’t solve right away and he’s been working at it for a while and still hasn’t gotten anywhere; which I am just loving. 😂 (he’s really excited about this one too.)

appears to be well made... this was purchased as a gift

This puzzle is beautifully crafted. The type of wood, the ease with which it spins is stellar. Love it!

Grandson is having a blast. He struggled a bit with comb but now has clearly secured his treasures.

Excellent everything! My son enjoyed it!!

Great product… makes the brain work if needing a challenge in math.

I didn't pay attention to the size. Not the company's fault as they state size and I just misread it I guess, because it is smaller than expected, but I still think the person will have fun with it. Made very well.

This item is beautifully designed and arrived on time!

Great item, prompt service, thank you

As this will be a Christmas gift, I will wait until after Christmas to give a review.

Frequently Asked Questions

What is Safecracker 40?

A one-piece handcrafted wooden math and logic brain teaser built from rotating wheels, for teens and adults.

What is the goal?

Turn the wheels until all 16 columns add up to 40 at the same time. Only one alignment works.

How does it work?

The puzzle is built from stacked rotating disks printed with numbers. As you rotate them, the column totals change, and the challenge is finding the single position where every column reaches 40 together.

How hard is it and how long does it take?

Intermediate difficulty. Most solvers need around an hour, and you can reset and solve it again.

How does it compare to Safecracker 50?

Safecracker 40 is the more approachable version. Safecracker 50, where the columns must total 50, is the harder sibling in the same family.

What is it made of and how big is it?

Maple with a cherry finish, about 4.4 by 4.4 by 0.75 inches, so it fits in a pocket or bag.

What is included?

The Safecracker 40 puzzle and an instructions and solution sheet.

Is it good for travel or the office?

Yes. It is self-contained, durable, and quiet, which makes it well suited to solo solving, travel, and quick breaks at a desk.

Can I personalize my Safecracker 40?

Yes. Your Safecracker 40 can be personalized with a custom laser engraving. Add a name, date, or short message when you order. See our laser engraving page for details and examples. For a custom logo or artwork, request a quote for custom work.