ID: 117543
Closed
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O'Beirne's cube (Morph II)
USD 50.00
- Closed
- Postage
-
to France
Calculated after auction
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| Bidder | Amount | Date |
|---|---|---|
| J****9 (98 ) | USD 50.00 | 04/01/2023 12:31:20 |
| P****i (113 ) | USD 48.00 | 04/01/2023 12:31:20 |
| J****9 (98 ) | USD 38.00 | 03/31/2023 16:00:57 |
| C****r (143 ) | USD 36.00 | 03/31/2023 16:00:57 |
| C****r (143 ) | USD 22.00 | 03/31/2023 14:32:37 |
| J****9 (98 ) | USD 20.00 | 03/26/2023 13:38:36 |
| User | Price | Quantity | Date |
|---|---|---|---|
| J****9 (98 ) | USD 50.00 | 1 | 04/02/2023 12:32:01 |
Description
This is the IPP32 puzzle exchange by Peter Hajek.
The six pieces can construct 6 different shapes (the cube two different ways).
Peter Hajek's notes:
In 1961, Thomas O'Beirne described in his New Scientist column (224, 560-1) a fantastic cube dissection. Six irregular pieces formed a cube and five other different rectangular cuboids. Surprisingly, it went largely unnoticed, probably because of difficulties in making the set. O'Beirne did not include it in his 1965 book Puzzles and Paradoxes and it remains little known and appreciated.I got interested in this puzzle via my earlier encounter with its much simpler but very pleasing pre-cursor which first appeared in the book Matematiceskaja Smekalka (Mathematical Know-how) by B. A. Kordemskij published in Moscow in 1954. The readers were challenged to cut an 8x8x27 wooden beam into four pieces which could then be assembled to form a cube. The solution consisted of pieces which could be morphed by simple one-step shifts into a cube and two other rectangular cuboids. I designed a box with three receptacles and some additional tasks to package this as a mechanical puzzle. It was produced commercially by RBA as the Morph Puzzle in 2006.
Morph II is the result of an attempt to do something similar with O'Beirne’s dissection so it is translated from a geometrical curiosity into a mechanical puzzle, and reaches people who will appreciate its elegance. I designed this presentation, Peter Knoppers helped with the construction of the box and laser-cut it and the New Pelikan workshop made the puzzle pieces. The non-morphing cube solution was pointed out to me by David Singmaster.
After the end of the auction the final shipping cost will be calculated.
Besides PayPal, Wise payment solution is also an option.
SEPA bank transfer is also accepted (EU countries) and free.
Specifications
- Designer
- T.H. O'Beirne
- Craftsman / Manufacturer
- Pelikan and Buttonius (box)
- Material
- Wood
- Unit of Measurement
- Centimeters
- Size
- 6x5x5cm
- Grade
- (A) Collector: Flaws must be very minor, subtle, and difficult to identify.
- Cosmetic Issues
- -
- Function
- (1) Perfect: Neither loose nor tight, no binding or alignment issues, moves smoothly.
- Functional Issues
- -
- Repairs
- No
- Packaging
- No
- Documentation
- No
- Assembly
- Assembled
- Smoke-free home
- Yes
Payments & Returns
- Payment Methods
- PayPal
Postage & Shipping
- Item Location
- 35000, Rennes, France
- Ships To
- Worldwide
- Shipping Instructions
-
Tracked shipment included.
Optional insurance upon request for an additional fee.
(combined shipment cost calculated if applicable)
- Returns Accepted
- No
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