klondike solitaire - help plz :)

[Leostod]

we are toying with a klondike solitaire program in school but the program we made ourself seems to be rather hard to solve.
so... any1 know how big the chance is for a klondike(solitaire) to solve?

in advance, thx for your help

 

[Jeremiah]

Well, in Scotland, we have a Klondike garden centre, maybe they know?