Logic Masters Deutschland e.V.

1. Classic: Normal Sudoku rules apply.
2. Arrow: There are some arrows on the grid. The numbers along the path of the arrow must add up to the value in the circled cell. In cases, where the circle is around two cells, it must be treated as a two-digit number, read left to right.
3. Little Killer: Clues outside the grid indicate the sum of the digits along the corresponding diagonal. Digits may repeat along diagonals if allowed by the other rules.

Given the slightly above average approval ratings, I suspect that the break-in might have been lot more trickier to spot than what I had anticipated. It clearly indicates my failing as a setter to direct the solver in the right direction. Regardless, I decided to write a walkthrough document for those who might want to know what path I had set out for the solver to find. This is not done to change the ratings, it was a good learning experience for me :-)