The majority of puzzle competitions are held using a trimmed mean of 5 format. This involves the competitor executing 5 solves in the round in question, after which the fastest and slowest solve are disregarded and the mean of the remaining 3 is used. The 6×6×6 and 7×7×7 events are ranked by straight mean of 3 — only three solves, none of which are disregarded. In 3×3×3 blindfolded and 3×3×3 fewest moves challenges, either straight mean of 3 or best of 3 is used, while 4×4×4 blindfolded, 5×5×5 blindfolded, and multiple blindfolded challenges are ranked using best of 1, 2 or 3, depending on the competition.