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STC #29-B Half Hour Variant by Stewart Coffin
USD 56.00
- Closed
- Postage
-
USD 8.00 to United States
Domestic USPS
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Seller Info
CubicdissectionExtras (534 )
- Registered Since
- 02/28/2019 15:18:20
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| Bidder | Amount | Date |
|---|---|---|
| F****m (307 ) | USD 56.00 | 04/11/2021 15:59:16 |
| j****e (21 ) | USD 51.00 | 04/11/2021 15:58:59 |
| F****m (307 ) | USD 51.00 | 04/11/2021 15:58:59 |
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| User | Price | Quantity | Date |
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| F****m (307 ) | USD 56.00 | 1 | 04/12/2021 16:00:02 |
Description
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.
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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.
Specifications
- Designer
- Stewart Coffin
- Craftsman / Manufacturer
- Stewart Coffin
- Material
- Birch plywood box, birch pieces
- Unit of Measurement
- Inches
- Size
- 3"
- Grade
- (A) Collector: Flaws must be very minor, subtle, and difficult to identify.
- Cosmetic Issues
- Erased pencil marks on underside
- Function
- (1) Perfect: Neither loose nor tight, no binding or alignment issues, moves smoothly.
- Functional Issues
- None
- Repairs
- No
- Packaging
- N/A
- Documentation
- N/A
- Assembly
- Assembled
- Smoke-free home
- -
Payments & Returns
- Payment Methods
- PayPal, Check or Money Order
Postage & Shipping
- Item Location
- 27605-1317, North Carolina, United States
- Ships To
- Worldwide
- Shipping Instructions
- Combined shipping is available - please message me after you are finished bidding for an invoice total.
- Returns Accepted
- No