Convex Concave, IPP23 (Chicago 2003) Exchange Puzzle by Scott Kim

Mijkel1969 111

USD 62.00

: Closed

Postage: TBD
USD 0.00 to United States

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Bids

Bidder	Amount	Date
s****t 54	USD 62.00	08/16/2026 09:34:09
C****r 152	USD 57.00	08/16/2026 09:33:39
s****t 54	USD 53.00	08/16/2026 09:33:39
C****r 152	USD 46.00	08/16/2026 07:38:42
s****t 54	USD 44.00	08/16/2026 07:38:42
s****t 54	USD 38.00	08/16/2026 02:38:56
C****r 152	USD 36.00	08/15/2026 09:30:30

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Description

"Convex Concave" is an M.C. Escher inspired 2-dimensional assembly puzzle from the incredibly creative and artistic mind of computer scientist, prolific puzzle designer, and master of the ambigram, Scott Kim. It was used by Scott as his exchange puzzle for the IPP23 Puzzle Exchange at the Chicago Puzzle Party in 2003. The object of the puzzle is to use the 7 magnetic pieces to form a variety of 3-D appearing shapes in 2-D!

The puzzle is as it was received at IPP23 in 2003 in Chicago, unopened in it's original packaging with all of its original paperwork. I will provide a copy of the solution to "Convex Concave" from the IPP23 booklet.

I will ship "Convex Concave" within the US as a ground advantage (first class) package for between $7.50 and $8.50 depending on postal code, or at insured priority mail pricing for between $10.50 and $15.50 depending on postal code, if preferred. I am happy to ship internationally at cost, likely around $30 for an object of this weight, but I cannot always guarantee that overseas packages can be insured or tracked. Please do not send payment until the postage cost is determined. Note, sadly, that tariff wars may be in effect for packages received in certain countries.

Please let me know if you have any questions regarding my copy of "Convex Concave."

Thank you for viewing my auction!

Specifications

Designer: Scott Kim
Craftsman / Manufacturer: Amina Allen, Colorfields
Material: Magnetic material, metal
Unit of Measurement: Inches
Size: 8 x 8
Grade: New: Unopened, unsolved, still in packaging.
Cosmetic Issues: None
Function: New: Unopened, unsolved, still in packaging.
Functional Issues: None
Repairs: No
Packaging: Yes
Documentation: Yes
Assembly: Disassembled
Smoke-free home: Yes

Payments & Returns

Payment Methods: PayPal

Postage & Shipping

Item Location: 49006-3265, Michigan, United States
Ships To: Worldwide
Shipping Instructions: I will ship "Convex Concave" within the US as a ground advantage (first class) package for between $7.50 and $8.50 depending on postal code, or at insured priority mail pricing for between $10.50 and $15.50 depending on postal code, if preferred. I am happy to ship internationally at cost, likely around $30 for an object of this weight, but I cannot always guarantee that overseas packages can be insured or tracked. Please do not send payment until the postage cost is determined. Note, sadly, that tariff wars may be in effect for packages received in certain countries.

Returns Accepted: No

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