LL Skill Gaming
CasperTech is a UK business corporation, not a legal firm, and it is therefore NOT CasperTech's place to interpret the laws of any country. If you want clarification on Linden Lab's skill gaming policy, the ONLY people to ask are Linden Lab themselves, since it is THEIR policy.
Information at Linden Lab's wiki
If these Linden Lab wiki links do not answer your question(s), you will need to log in to your SecondLife.com dashboard, and open a support ticket directly with Linden Lab to get them answered.