Teutoburger Wald
(Published on 2. November 2025, 13:54 by EdTheAlchemist)
Link to SudokuPad: https://sudokupad.app/116v5xr97h
In 9 AD, the Roman legions of Publius Quinctilius Varus were massacred by the Germanic barbarians of Arminius in the Teutoburg Forest.
Sudoku: The normal Sudoku rules apply.
Forest (Yin-Yang): The forest is interwoven with light and shadow. Fill the grid with light and shadow (the order doesn't matter!) so that all light squares are orthogonally connected, all shadow squares are orthogonally connected, but no 2x2 area consists entirely of light or shadow.
Counting: Legionaries (squares) and Germans (circles) each count the number of squares of the same color (light or shadow) that are orthogonally visible from their position, including themselves. The other color blocks the line of sight.
Barbarians (German Whisper): The Germans whisper to each other along the green lines. Two cells connected by German whispers must differ by at least 5.
Safety Lines (Renban): The Legionaries hold onto pink safety lines and try to stay together. Each pink safety line is a non-repeating, consecutive sequence of numbers.
Solution code: Bottom row
Comments
on 6. November 2025, 01:52 by Cantabrigiensis
Excellent puzzle, very enjoyable, thank you!
on 3. November 2025, 11:07 by Snookerfan
Lovely! Very smooth puzzle for solvers with experience with the different rules. Yin Yang is one of my favorite genres. Thank you
on 2. November 2025, 18:34 by VitP
what alchemy is this ?
a novel variation on the sight lines subvariant.
but the old principle still applies: no more than ONE counter on a transitionless edge.
on 2. November 2025, 15:54 by EdTheAlchemist
Made the solution code more sensible
