This is NZ Herald's hard Sudoku of 02/05/2015. Take a good look at the 9 in cell e5. There is no room for 9 in box 2 and no room for 9 in box 8. All cells in columns d and f for 9 at all.
This is one of few Herald's errors in Sudoku found.
Please do not try to solve this insoluble challenge.