FV-pento-sudoku challenge

As we want to be part of the latest rage, but foremost because we are
addicted ourselves, our new challenge is a sudoku.**
**With lots of thanks to Aad van de Wetering.

If you want to
practice a bit with
5x5 sudokus you can click
here or you take
the site of
Bob Harris.

First we had to select a suitable 10x10 field.

We chose this one:

It is the only tiling of a square with 10 F and 10 V pentominos and in
addition it has a rotational symmetry.

So, each area (in the same colour) that must hold the digits 0 to 9 is
formed by one F and one V pento.

In the above
square, in each field put one of the digits 0 to 9. In every row, in every
column, and in every decamino, use each of the digits 0 to 9 exactly once.
Nineteen numbers have been filled in already, these are not to be changed,
of course.

We
usually use Excel for finding the solutions. We have already prepared a
file that contains our challenge.

If
you think our sudoku is easy, you can always try to solve a Ukodus+ on
Aad's site.

http://home.wxs.nl/~avdw3b/ukodus.html