Notes on this puzzle
Sudoku #5302 is a hard grid with 28 givens, which leaves 53 cells waiting for a digit. Played purely by logic, it takes 58 forced steps from the first placement to the last.
Most cells fall to the hidden single move: 51 of the 58 steps. Pointing pair accounts for 5 more.
Among the givens, 3 is the most common digit (4 times) and 4 the rarest (2). The emptiest box is the top-left one, with 2 givens; the top-middle box is the most crowded, with 4.
Where to beginLook at row 2, column 2 first: a hidden single is available there from the very start. Pencil in candidates for one box at a time and watch for two cells that share the same pair.