Christmas Tree Puzzle

With over 21,000 solutions this puzzle is good for all ages, rewarding the solver more often.  The circles in the corners of the pieces are reminiscent of ornaments.  The pieces are a complete set of all the ways to put circles in the corners of a hexagon, from zero to six.  Bring this puzzle out each holiday season to become a family heirloom.  Hint: When placing the pieces, save the asymmetric pieces and those with the fewest circles until last.

• red alder and walnut wood
• 15 different pieces
• 21,909 different solutions
• 4.5″ x 6″ (11cm x 16cm)
• difficulty level: 3 out of 10