arbor8 Kwon-Tom Obsessive Puzzles: 5538 Best Total: 13m 24s | Posted - 2020.09.29 14:49:25 For a Monday ,this was quite difficult but not a very difficult. Beside absolute level of difficulty, it is a matter of specific toolset. For me, 21FEB 11 , 7JAN 08 and 24JUN 19 were difficult but most were solved fast here |