Hi there Coolfighter1993, we use a number of short hand in order to make talking about moves easier. For Siegfried, we use a number of notation regarding his stances which are as follow.
SCH - Siegfried Chief Hold
SSH - Siegfried Side Hold
RSH - Reverse Side Hold
SBH - Siegfried Base Hold
So SCH KK is referring to the Siegfried Chief Hold two kick string. The notation becomes useful especially for combos.
Example, if you were to write out the basic Siegfried combo (in Soul Calibur 1) 3B SCH B it would like this:
Sky Splitter -> Siegfried Chief Hold Tera Stomp.
While it may seem difficult at first, with any language, the more you use it the easier it is to become 2nd nature.
Idlemind put up an excellent video discussing the short hand we use in this game,
!
Also there is a basic notation thread here.
http://8wayrun.com/threads/basic-notations-and-terminology.58/
Let us know if you have further questions in the Q&A thread =)
http://8wayrun.com/threads/siegfried-q-a-general-discussion-thread.8846/page-3