Sudoku Non-consecutive-diagonal 9×9 1 puzzle
This is a non-consecutive-diagonal sudoku puzzle.  No digit may be diagonally-adjacent to a consecutive digit. But as you can see from the givens, consecutive numbers can be adjacent horizontally or vertically.  What you can’t have, for example, is a 1 diagonally next to a 2 because the 1 & 2 are ‘consecutive’ (have a numeric difference of 1).