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Description
casse tete mathematique addition des anneaux pour atteindre 50The wooden math puzzle 5 rotating rings, diameter 12. 8 cm, natural wood. Objective: align the numbers in each column to obtain a sum of 50. Over 65,000 possible combinations, only one is correct. An educational tool and intellectual challenge for ages 8 and up. Objective: sum 50 per column Each column of numbers must total exactly 50 seemingly simple, but with 65,000 possible combinations and only one correct solution. 5 independent rotating rings
The wooden math puzzle — 5 rotating rings, diameter 12.8 cm, natural wood. Objective: align the numbers in each column to obtain a sum of 50. Over 65,000 possible combinations, only one is correct. An educational tool and intellectual challenge — for ages 8 and up.
Objective: sum 50 per column
Each column of numbers must total exactly 50 — seemingly simple, but with 65,000 possible combinations and only one correct solution.
5 independent rotating rings
Each ring rotates independently and exposes or hides the numbers on the lower ring — each rotation changes the set of visible values in each column.
65,000 combinations — 1 solution
The complexity is exponential — each ring movement interacts with the others. The unique solution requires logic, patience, and method.
Natural wood — D12.8 cm
Made of quality natural wood, pleasant to the touch. Diameter 12.8 cm — compact and can be placed on a desk or shelf.
Stimulates logic and concentration
Develops logical thinking, problem-solving, patience, and numerical skills — an educational tool disguised as a game.
Educational gift for all ages
For children aged 8 and up, adults, math enthusiasts, and puzzle lovers — a challenge that never gets old.
Wooden math puzzle — 5 rings · D12.8 cm · sum 50 · 65,000 combinations
On the surface, it's simple: turn the rings so that each column displays a sum of 50. In practice, each rotation of a ring simultaneously modifies several columns — and with 65,000 possible combinations for a single correct solution, brute force logic is not enough. It requires a method, patience, and the satisfaction of having overcome one of 65,000 dead ends before finding the right one. Made of natural wood, 12.8 cm in diameter — the puzzle that stays on the desk until you've solved it.
| Material | Natural wood |
| Diameter | 12.8 cm |
| Rings | 5 — rotating and independent |
| Objective | Sum of 50 in each column |
| Combinations | Over 65,000 — 1 single solution |
| Recommended age | 8 years and up |
| Packaging | Shrink wrap |
Tip for solving: start by fixing a reference ring (the central one, for example) and analyze the columns one by one. Note the visible values before each rotation to understand the impact of each movement. A systematic column-by-column approach is more effective than random trial-and-error — even if trial-and-error is part of the fun.
High difficulty level: with over 65,000 possible combinations and only one correct solution, this puzzle is designed to be challenging. Don't get discouraged — solving it may take several sessions. This is precisely what makes it a memorable and satisfying challenge.
🎁 The gift for logical minds: natural wood, D12.8 cm, 5 rings, 65,000 combinations. A unique intellectual challenge for a birthday, Christmas, teacher gift or math lover's gift — for children aged 8 and up and adults who love puzzles.
Frequently Asked Questions
How does the puzzle work?
The puzzle consists of 5 independent stacked rotating rings. Each ring rotates freely and exposes or hides the numbers on the lower ring. The goal is to align the rings so that the sum of the numbers in each column is exactly 50. With over 65,000 possible combinations, only one configuration is correct.
Is it really difficult to solve?
Yes — it's a serious challenge. The difficulty comes from the fact that each rotation of a ring simultaneously modifies several columns, creating complex dependencies between values. With 65,000 possible combinations for a single solution, a methodical approach is necessary. Solving it can take several hours or several sessions.
What is the recommended age to play?
From 8 years old — but the complexity of the challenge is especially suitable for adults and children who are comfortable with mathematics. For younger children, free exploration of the rotating rings remains a fun and stimulating activity even without the goal of formal resolution.
Is there a unique or multiple solution?
There is only one correct configuration among the 65,000 possible combinations — the one where all columns simultaneously display a sum of 50. It is this unique character of the solution that makes solving it so satisfying.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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- Delivery to the USA:
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.2 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 4
Great product!
Color: Beige, Size: 88"- 4 Panel
Worked well and it was easy to roll around and fold. The size is great and has a good weight to it. Very sturdy, I plan to buy more
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 10, 2026
★★★★★ 5
Wonderful Room Partition !
Color: Black, Size: 88"- 4 Panel
This product is made very well, packaged, and assembled with no problems. All parts and tools are included (except a Phillips screwdriver.) I put this item all together by myself on a bed to make it easy and simple. I made sure that every screw head was attached where the recessed dimples are located on the vertical poles, just don't overtighten anything. Everything fits like a charm, good quality, looks great, perfect height, rolls with ease, proper privacy, really impressive ! I got the 4-panel in black color. I would certainly buy this item again ! Thank you !
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 26, 2025
★★★★★ 1
Not impressed
Color: Beige, Size: 21.5"- 1 Panel
Very flimsy but does the job intended
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
★★★★★ 3
Fair
Color: Black, Size: 88"- 4 Panel
Fair product. Very cheap quality.
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Reviewed in the United States on August 10, 2025
★★★★★ 5
Sturdy and Easy to Move
Color: Black, Size: 132"- 6 Panel
This 6 ft black partition on wheels is exactly what I needed to divide space without sacrificing style or stability. It’s sleek, professional-looking, and blends in well with any environment—from office spaces to home studios.
The build quality is impressive—very sturdy and doesn’t wobble at all once it’s in place. The wheels glide smoothly and lock securely, making it easy to reposition or keep stationary as needed. Assembly was quick and straightforward, with all parts clearly labeled.
Overall, this partition is a perfect combination of functionality and design. Highly recommend it if you need a durable, mobile room divider that looks great and performs even better.
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Reviewed in the United States on August 4, 2025
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