I am a novice at Sudoku [1]and I have promised myself I wont be lured into it. Some promises are hard to keep. One always finds a way out. I have promised myself I wont be lured into solving Sudoku. So I made my own.
[2]
The easiest way out in Sudoku ( ok, this is just IMO – I think there are lots of other theories out there) is to crack the cells that are most restrained first. ( Call it restrained/constrained/limited whatever – I dont know the technical term.)
Anyway, the way to make the puzzle inherently more dificult (Using larger grids to make “super”sudokus does not make it inherently difficult) is to minimise the constrained cells, preferably to 0. Once I figure out how to do that, no more Sudoku for me.