Logic Masters Deutschland e.V.

This is the second puzzle inspired by Stranger Things. The previous one had surprisingly few solves, so this time I'm including a small graphical explanation of the rules. It's not very difficult and I encourage you to give it a try.

Rules:

• Normal sudoku rules apply.
• Each cell N in the solved grid has a corresponding shadow cell whose value is 10-N. The grid contains normal clues related to normal cells, and shadow clues related to shadow cells. The solver must determine which clues are shadow clues. There are exactly 3 shadow clues in the grid.
• Cells connected by an X must sum to 10. Cells connected by a V must sum to 5. Digits connected by a white dot are consecutive. Not all Xs, Vs and dots are given.

The image below shows an example of a partially solved grid and the corresponding shadow cells. For example, the digit 6 has a corresponding shadow cell whose value is 10-6=4. The V clue marked green is a normal clue, and the V clue marked red is a shadow clue, because it's only true for the shadow cells.

Play online on SudokuPad