The Christmas Tree is decorated
with four color bulbs. Put additionally two red, two
yellow, two violet, and two blue bulbs on eight vacant
cells of the Christmas Tree so that the bulbs of the
same color lie in the corners of an equilateral
triangle, and the four resulting triangles have all
different sizes. These triangles may have a different
To add a bulb simply keep clicking on a chosen cell of
the Christmas Tree until you have a bulb of a necessary
color. A cell becomes empty just after clicking on a
blue bulb in it. Note that none of the four bulbs given
at the start cannot be changed or removed. Use "Restart"
to start the puzzle over again.