Descend
- Entropic lines
- Renban lines
The brief
Normal sudoku rules apply.
Every set of 3 consecutive cells along the orange "entropic" line must contain a low digit {123}, a middly digit {456}, and a high digit {789}.
The pink "renban" line contains a non-repeating set of consecutive digits, in any order.
Grey fortress cells contain digits that are smaller than all adjacent non-fortress cells.