Here is a collection of frequently asked questions about our
chess software. If you cannot find the answer you are looking
for you can try to download the documentation of our products.
What if my computer crashes or if I lose my code? Do I have to
buy the program again?  No, if you lose the program or your
personal license key, as a registered customer you will always
get a free replacement from us. It is also possible for you to
make backup copies of our software.  What is the difference
between Shredder Classic 4, Shredder 12 and Deep Shredder 12?
All three versions are delivered with the same user interface
and differ only in the included chess engine. Shredder 12 is the
latest and strongest version of the Shredder chess family which
exists since 1993. Deep Shredder 12 additionally supports
computers with more than one processor or the new dual core
processors and can therefore compute faster and more efficiently
on those machines, but it will also run fine on normal PCs with
just one processor. Shredde