It’s the corners that matter, so you can’t really cut them from the puzzle and expect good results.
Rules:
Normal Sudoku rules apply.
Renban: Digits on each (purple) line form a set of non-repeating consecutive digits in any order.
XV: Digits in cells separated by an X sum to 10. Digits in cells separated by a V sum to 5. Not all X or V clues are given.
Estimated difficulty: 2 out of 5
Solve on SudokuPad