Lockout Labyrinth
- Kropki dots
- Lockout lines
The brief
Standard sudoku constraints: Every row, column, and box must contain a complete set of the digits 1-9.
Lockout lines: Digits in the diamonds at the ends of a lockout line must differ by at least 4. Digits on the line may repeat but cannot be equal to or between the digits in the diamonds.
Kropki dots: Digits on either side of a white dot are consecutive. Not all possible dots are shown.