published by Fred76 on Wed, 04/29/2015 - 10:21
Very nice round of sudoku GP. Thanks to the Serbian authors !
I wondered what was the meaning of letters C, F and U?
I guessed the C was for the Classic (very good work to have themed C1-C5 in order of difficulty). Is it correct?
What about F and U?
Fred
c, f, u
thank you, fred!
it's correct: C = Classic.
and about f and u... we tried to separate the Familiar variations from the Unfamiliar ones.