Logic Masters Deutschland e.V.

I was challenged by Qodec to make a renban fortress puzzle, and, after multiple versions and a lot of tinkering, this is the result! I'm really, really happy with how this turned out, and I think the logic is very interesting! I hope you give it a try.

Normal sudoku rules apply.

Renban: Digits along each blue renban line must be a set of consecutive digits in any order, and must not repeat.

Fortress: Minimum/maximum cells must be greater than or less than their orthogonally adjacent neighbors, as indicated by the symbols bordering the cell.

Play on F-Puzzles!