ID: 107109
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Isaacs's Iris (IPP21 exchange)
€43.00
- Closed
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Seller Info
Puzzle provider (326 )
- Item Location
- Netherlands
- Registered Since
- 30.12.2017 13:48:15
- Feedback
- 100%
- View Other Items
| Bidder | Amount | Date |
|---|---|---|
| F****m (480 ) | €43.00 | 07.11.2020 22:49:06 |
| p****e (75 ) | €42.00 | 07.11.2020 22:48:44 |
| F****m (480 ) | €41.00 | 07.11.2020 22:48:44 |
| p****e (75 ) | €40.00 | 07.11.2020 22:48:22 |
| F****m (480 ) | €39.00 | 07.11.2020 22:48:22 |
| p****e (75 ) | €37.00 | 07.11.2020 16:12:24 |
| j****9 (144 ) | €36.00 | 07.11.2020 16:12:24 |
| p****e (75 ) | €35.00 | 07.11.2020 16:08:48 |
| j****9 (144 ) | €34.00 | 07.11.2020 16:08:48 |
| p****e (75 ) | €33.00 | 07.11.2020 16:08:29 |
| j****9 (144 ) | €32.00 | 07.11.2020 16:08:29 |
| p****e (75 ) | €31.00 | 07.11.2020 16:07:07 |
| j****9 (144 ) | €30.00 | 07.11.2020 16:07:07 |
| p****e (75 ) | €28.00 | 07.11.2020 15:53:45 |
| j****9 (144 ) | €27.00 | 07.11.2020 15:53:45 |
| j****9 (144 ) | €24.00 | 07.11.2020 08:57:28 |
| F****m (480 ) | €23.00 | 07.11.2020 07:31:14 |
| j****9 (144 ) | €22.00 | 07.11.2020 07:31:06 |
| F****m (480 ) | €22.00 | 07.11.2020 07:31:06 |
| j****9 (144 ) | €21.00 | 02.11.2020 18:24:36 |
| M****n (3 ) | €20.00 | 02.11.2020 18:24:36 |
| M****n (3 ) | €16.00 | 02.11.2020 16:10:39 |
| j****9 (144 ) | €15.00 | 02.11.2020 16:10:22 |
| M****n (3 ) | €15.00 | 02.11.2020 16:10:22 |
| j****9 (144 ) | €13.00 | 02.11.2020 13:37:04 |
| m****g (44 ) | €12.00 | 02.11.2020 13:37:04 |
| m****g (44 ) | €11.00 | 01.11.2020 08:17:52 |
| User | Price | Quantity | Date |
|---|---|---|---|
| F****m (480 ) | €43.00 | 1 | 08.11.2020 22:50:01 |
Description
The 'Isaacs's Iris' puzzle was Stan Isaacs's exchange at IPP21 in Tokyo, 2001
Designed and Manufactured by George Miller,based on an idea by Donald Knuth
The goal of this puzzle is to put the 16 pieces together to form a disk, like the iris of an eye.
How many solutions are there for the disk?
How many are there with alternating colors?
Each piece has a number or a letter on it. What do those numbers represent?
When solved, the disk has a 6 inch diameter.
---------- shipping & payment ----------
This puzzle will be shipped from the Netherlands, registered and insured, for €9 to NL, €15 within the EU, €20 outside the EU.
Multiple items for one winner will be shipped together to reduce total shipping cost, please wait for the invoice.
Payment via Paypal (no fee added), or Transferwise (5% discount for you).
Payments & Returns
- Payment Methods
- Other payment method (see description)
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