ID: 113097
Closed
Listing ID: #113097 has been added to your wishlist.
Isaac's Iris
USD 36.00
- Closed
- Postage
-
USD 5.00 to United States
First class package
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- Zip/Post Code
- Quantity
21 watching
| Bidder | Amount | Date |
|---|---|---|
| C****r (143 ) | USD 36.00 | 02/11/2021 20:44:16 |
| User | Price | Quantity | Date |
|---|---|---|---|
| C****r (143 ) | USD 36.00 | 1 | 02/14/2021 12:04:05 |
Description
|
A seemingly incredibly mathematically complex
puzzle in mechanical puzzle form, Isaac's Iris was based on an idea by
world-renowned computer science giant Donald Knuth and used by perennial
puzzle exchange participant Stan Isaacs as his exchange puzzle at the
21st International Puzzle party (IPP21) held in Tokyo in 2001. The
object of the puzzle is to arrange the sixteen pieces to form a disc ---
resembling the iris of an eye or of a camera (as in photo 2, which is a stock photo --- my offering is still in its original shrink wrap) --- that
meets certain assembly constraints. |
Specifications
- Designer
- George Miller / Donald Knuth
- Craftsman / Manufacturer
- George Miller
- Material
- Hard plastic
- Unit of Measurement
- Inches
- Size
- 3 1/2 in diameter when assembled
- Grade
- New: Unopened, unsolved, still in packaging.
- Cosmetic Issues
- -
- Function
- New: Unopened, unsolved, still in packaging.
- Functional Issues
- -
- Repairs
- No
- Packaging
- Yes
- Documentation
- Yes
- Assembly
- Disassembled
- Smoke-free home
- -
Payments & Returns
- Payment Methods
- PayPal
Postage & Shipping
- Item Location
- 49006-3265, Michigan, United States
- Ships To
- Worldwide
- Shipping Instructions
- Shipping via first class package is $5.00. I am happy to ship via priority mail; the cost will vary between $8.00-$10.00 depending on location.
- Returns Accepted
- No