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Tsukuda's Square (hard)
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The hardest of three versions, depicting numbers 1-16.

At least this version with numbers was marketed in Britain (as "it") too.
There was also a medium version (see the separate entry) and an easy version (very similar to Uriblock). All three came in at least two different designs. One named "Tsukuda's Square", the other "Four by Four".
There was also a variant "4x4" (no other title) with yellow frame and black pieces with white numbers.

For image 10 applies:
Courtesy, The Lilly Library, Indiana University, Bloomington, Indiana.

Price Tracking Data

DISCLAIMER: The following table contains user-generated content. This information is collected to serve as a rough guideline and is certainly not complete and may not even be accurate. This information is filtered and carefully moderated, but incorrect information will inevitably find its way into the system. Always use your own judgement when buying or selling an item.

Sale Date Price (USD) Sale Type Condition Package Condition Notes Contributors Edit
Nov 29 2006 $129.99 eBay Auction Mint Mint Black/grey with numbers on tiles Aleksey
Jan 21 2007 $108.50 eBay Auction Average Missing Black/Red pattern; Includes Mad Marbles and other puzzles. Aleksey
Jan 22 2007 $99.00 eBay Auction Mint Good White/Blue rhombic pattern Aleksey

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Contributors

Thank you to the following people for their assistance in helping collect the information on this page: Geert Hellings.

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