Dan Gilbert's WETLANDS Original Triazzle 528-piece Jigsaw Puzzle (1996) Dan Gilbert's Unique 528 Piece Interlocking Triangular Puzzle The Award-Winning Triazzle Puzzle Series A Jigsaw with a whole new angle! Triazzle, the award winning puzzle, debuted in 1991. The unique concept and appealing artwork were created by Califonia nature artist Dan Gilbert, whose refreshing style has won him enthusiastic, international acclaim. 528 Pieces; 28" x 24"; Unique triangular pieces; Ages 8 to Adult; Fun for the entire family; copyright 1996 Dan Gilbert Inc.