i finished the hard level in 19 min. but the timer
just kept going
had me going ^^
a good version tho it gets a bit confusing when
removing pencil marks
best sudoku pencil marks reduce lot of work.
not for me !!!
Sorry Zubair, *I* think worst Sudoku, just so
complicated with little numbers everywhere, AND
took me 10 minutes just to figure how to put a
number somewhere - just too complicated by half.
I'll stick to "basic" Sudoku,
thank you. LOL