 At the same time FIDE also instituted the lesser rank of International Master, and two further subordinate ranks, FIDE Master and Candidate Master, were later created.The requirements for each rank have varied over time, but generally require having demonstrated suitably strong skill in rated competition.Additionally, the World Federation for Chess Composition awards Grandmaster, International Master, and FIDE Master titles to people who demonstrate high skill in the field of composing and solving chess problems (see List of grandmasters of the FIDE for chess compositions and Chess problem § Titles).