You should first look for any of the pieces that are required to be in a specific place and place them. Next check to see if any of the remaining figures have a relationship with the figures already placed. If more than one. First look at pieces that must be on an end.if more than one piece remains, then analyze the relationship between the two, if any, and try to place with respect to those rules as well. Review the rules of any remaining pieces. Try to fit them in without violating the rules for the existing pieces.