Basic Tactics taught all of the tactics to find in a position. Intermediate tactics teach how to create combinations that lead up to a winning tactic.
Also, the thing I hate THE MOST in chess games is losing a game in the ending that I should win. Advanced FBCC classes include endgame studies so that its members excel at winning endgames. Our players are better prepared for endgames than just about anyone else and often win games in the ending that they would otherwise lose.
Intermediate Tactics 3 (out of 12) No prerequisite needed.