The Grandfather Burr Puzzle - 18 Piece Burr Puzzle mothers_day and water-resistant

and water-resistant

Feels like a tiny frog basking on a lily pad

making it a true dreamland for the little ones

making it a reliable alternative to plastic

The Grandfather Burr Puzzle - 18 Piece Burr Puzzle mothers_day and water-resistantDesigned by W. L. Van der Poel, a Dutch computer scientist. One of the most challenging interlocking puzzles in the collection. Composed of 18 pieces with unique notches. Internal gaps of empty space make interlocks nonintuitive. Requires the correct sequence to release the first piece. Reassembling all pieces is significantly more complex. Demands patience and determination from serious puzzlers. Doubles as an attractive display piece for shelves or