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Connection AKA Altekruse
Demolish the connection, then try to interlock it once more. Asymmetrical 12-piece burr puzzle which was patented in 1890 under the name of one William Altekruse. The Altekruse puzzle has an unusual assembly procedure so this is a little bit different to other typical forms of a burr puzzle.

  • Difficulty Level: 2 (Intermediate)
  • Dimensions: 2.75" x 2.75" x 2.75"