Welcome, Guest
My Account
.jpg)
.jpg)
.jpg)
.jpg)
| Bidder | Amount | Date |
|---|---|---|
| F****m 332 | USD 56.00 | 04/11/2021 15:59:16 |
| j****e 25 | USD 51.00 | 04/11/2021 15:58:59 |
| F****m 332 | USD 51.00 | 04/11/2021 15:58:59 |
| j****e 25 | USD 40.00 | 04/11/2021 13:43:25 |
| F****m 332 | USD 38.00 | 04/11/2021 12:57:16 |
| s****7 48 | USD 36.00 | 04/09/2021 01:30:14 |
| j****e 25 | USD 35.00 | 04/09/2021 01:30:14 |
| j****e 25 | USD 32.00 | 04/05/2021 17:49:55 |
| W****I 101 | USD 30.00 | 04/05/2021 17:49:55 |
| j****e 25 | USD 0.01 | 04/05/2021 15:58:10 |
Stewart Coffin designed the Half Hour puzzle in 1975. So named because he thought it would take most people about that long to solve it. He said:
"The six-piece version of the 3x3x3 cube will be considered first. For aesthetic reasons, one might prefer that all the pieces be the same size, but this is impossible, so the nearest approximation is to use three four-block pieces and three five-block pieces. It is also desirable that all pieces be non-symmetrical but this is likewise impossible so two of the four-block pieces will have an axis of symmetry. All pieces will, of course, be dissimilar. Of the several thousand, such combinations possible the author tried several that proved to have either multiple solutions or no solution, until finally finding one with a unique solution."
This variation of the Half Hour puzzle features a box with a restricted opening that dovetails with the box's top to store the pieces, as well as provide additional complexity to the solution. Crafted and signed in pencil by Stewart Coffin in 2015. This copy also has erased pencil markings on the underside.
This puzzle is sold assembled.
************************************************************
For multiple items, combined shipping is available. Simply message me once you are finished bidding and I will send an invoice.
Precision wood puzzles can be damaged by environmental changes. Please read the Caring for Wood Puzzles guide to ensure proper fit and operation.