Logic Masters Deutschland e.V.

This is probably the final 4D puzzle, following 4D Arrow Sudoku and 4D Thermo Sudoku

This puzzle links two different sudoku grids so that if a cell is >=6 in one grid, it will also be >=6 in the other grid.

For example, if R2C4 was a 7 in the first grid, we would know R2C4 must be a 6,7,8 or 9 in the other grid. If R5C8 in the second grid was a 5, we would know R5C8 in the first grid must be a 1,2,3,4 or 5.

Basically, it is a high/low coloring puzzle where when you deduce the color in one grid, you can also color the other grid in the same location.

Normal sudoku rules apply.

In cages, digits cannot repeat and must sum to the small clue given in the top left corner.

If a cell contains a number >=6 in one grid, the corresponding cell in the other grid must also contain a number >= 6.

Solve the puzzle at penpa.