The 10 Tantrix Discovery Hexagons have to be arranged to make a loop -
This is the solution to the 9 loop using 9 hexagons to make a
yellow loop(kidney shape). I have one more solutions to find (number 10)
For more information http://www.tantrix.com/
You can play this game online from the website also ...
http://www.tantrix.com/english/TantrixPuzzlesOnline.html
Great for rainy days. See next image for number 8 solution.
By the Way the Books a good one - if your into eng. maths.