Entropic Circuit
- Entropic lines
- Quadruples
The brief
- Normal sudoku rules apply, i.e. each row, column and 3x3 region has to contain the digits from 1 to 9 once each.
- Entropic lines: Every set of three adjacent digits on an orange line must include a low digit (1, 2, 3), a medium digit (4, 5, 6), and a high digit (7, 8, 9).
- Quadruple: A digit in a circle must appear in one of the four surrounding cells.