If anyone cares to try:
dkm software's Sudoku Online
Puzzle number: 58244723
Difficulty level: Supreme
I solved this puzzle with no penciling in of possible values, but rather, with nothing but mental imaginings.
Did several others at the Supreme difficulty level in this challenging fashion just prior to solving this one, but didn't think to notice game number or to get screenshot.
Just starting to play sudoku, btw. Kind of avoided it for a while.
Affected meteoric rise from absolute novice puzzles to difficult ones, now solved with no penciling in of possibilities and no use of other mind-alleviating crutches, in about a week.
Who is the baddest?! ;-)