Consecutive Sudoku - 400 Hard to Very Hard Puzzles 9x9 vol.8

Consecutive Sudoku is played in the same way as Sudoku except that some cells have special markings to indicate that these cells contain consecutive numbers. White bars between squares indicate that the squares are consecutive - meaning that the numbers in these two squares have a numerical difference of '1'. For example: 1 and 2; or 4 and 5. If there is no white bar then the numbers are not consecutive.