Just an FYI: When dealing with relational values (time, money, etc) the clue word "somewhat" is insignificant. As in "somewhat shorter" or "somewhat less" is the same thing as saying "shorter" or "less".
For example, in this puzzle, the time increments are 2 minutes. Clue #2 uses the words "somewhat shorter". Up to now, I thought that meant this meant "more significant than one increment". Nope. It just means "shorter by any increment."