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| Bidder | Amount | Date |
|---|---|---|
| x****4 59 | USD 285.00 | 08/21/2020 19:27:51 |
| z****5 116 | USD 270.00 | 08/21/2020 19:27:51 |
| z****5 116 | USD 267.00 | 08/21/2020 08:30:25 |
| T****a 5 | USD 252.00 | 08/21/2020 08:30:17 |
| z****5 116 | USD 250.00 | 08/21/2020 08:30:17 |
| T****a 5 | USD 230.00 | 08/21/2020 08:10:28 |
| z****5 116 | USD 220.00 | 08/21/2020 08:10:28 |
| T****a 5 | USD 210.00 | 08/21/2020 08:10:12 |
| z****5 116 | USD 200.00 | 08/21/2020 08:10:12 |
| T****a 5 | USD 190.00 | 08/21/2020 08:09:53 |
| z****5 116 | USD 180.00 | 08/21/2020 08:09:53 |
| T****a 5 | USD 160.00 | 08/20/2020 07:49:09 |
| z****5 116 | USD 150.00 | 08/20/2020 07:49:09 |
| T****a 5 | USD 130.00 | 08/17/2020 01:41:08 |
| g****g 1 | USD 120.00 | 08/17/2020 01:41:08 |
| T****a 5 | USD 110.00 | 08/16/2020 13:46:21 |
| A****n 13 | USD 100.00 | 08/16/2020 13:46:21 |
| A****n 13 | USD 80.00 | 08/16/2020 12:04:02 |
| D****m 10 | USD 75.00 | 08/16/2020 12:04:02 |
| A****n 13 | USD 55.00 | 08/16/2020 12:03:51 |
| D****m 10 | USD 50.00 | 08/16/2020 12:03:51 |
| A****n 13 | USD 11.00 | 08/16/2020 12:03:43 |
| D****m 10 | USD 10.00 | 08/16/2020 12:03:43 |
| A****n 13 | USD 1.00 | 08/16/2020 12:01:03 |
The Binary Burr is a classic Bill Cutler design. It was awarded a First Prize at the 2003 IPP Puzzle Design Competition, and has been unavailable for several years. Here is what Bill has to say about it:
"The Binary Burr is a burr that functions like a 6-ring version of the Chinese Rings. The puzzle consists of 21 pieces. One is equivalent to the ‘bar’ in a Chinese Rings puzzle, and six others are equivalent to the ‘rings’. The other 14 pieces in the puzzle construct a ‘cage’ or ‘box’ that holds the other pieces in place. The entire puzzle should perhaps be called a ‘boxed burr’, and might be more logically constructed with only a solid wooden cage, however Bill chose to dissect this outer shell into smaller burr-like pieces.
To disassemble the puzzle, the rings and bar must be manipulated until the bar is freed. After the bar is removed, then the rings can be removed one-at-a-time, and finally the remaining pieces come apart easily.
The number of moves required to remove the first piece is 85, which is approximately 2 * (2/3) * 2^6 or 85.3 . Each move of a ring on or off the bar in the Binary Burr requires two moves - a movement of the bar piece, and a movement of the ring piece."
Construction of this puzzle was tricky. The humidity in my workshop was fluctuating wildly, so I opened up the tolerances more than I usually do to make sure the final product wouldn't bind up or get stuck. The good news is that I was successful there - this puzzle should work in all humidity conditions. The bad news is that the puzzle turned out looser than I would have liked, having perhaps .035 inch cumulative tolerance variation. In practice this means that while the puzzle looks and functions fine, it's a little looser in the hands than my normal standards. I have subsequently discounted the price quite a bit from the $200 I had planned to charge. This puzzle is shipped assembled.
For multiple items, combined shipping is available. Simply message me once you are finished bidding and I will send an invoice.