This 81 piece wooden jigsaw puzzle is challenging because the puzzle is cut so that any two pieces can fit together, and there are a number of false edge and corner pieces (click on the small image below the big image above to see example puzzle pieces). The dragon was created by Japanese woodblock artist Hokusai, we believe around 1830. This puzzle has a straight edge. All our puzzles are made with 1/4" thick wood in the USA. Packaged in a small box with a magnetic clasp. Warning: puzzle pieces are a choking hazard for small children.