Logic Masters Deutschland e.V.

Normal Sudoku rules apply.

5's live in Dutch Flats
All 5's in the grid must strictly have EITHER; a '1' directly above it AND/OR a '9' directly below it. It may have both, but it doesn't need both.
Examples provided below on an empty grid.

Friendly Cells
Digits in a circle must match that circles Row, Column or Box number.
For example R2C3 must be either a 1 (Box), 2 (Row), or 3 (Column).
All circles are given!

To play this puzzle please click here: Play CTC

Please give this a chance, I promise it is approachable once you appreciate the constraints.

Special Thanks

• goodcity for sharing the setting of this series with me.
• antiknight for an excellent puzzle using the constraint.
  Link: 5's live in Foggy Flats (FOW)
• nurator for the puzzle that inspired mine.
  Link: Circle of Friends

Previous puzzles in this series:

• Classic
• Thermometers
• German Whispers
• Region Sum Lines
• Sandwich Sums
• Little Killer
• Kropki
• Zipper Lines
• Renban - By GoodCity
• Nabner - By GoodCity
• Skyscrapers - By GoodCity
• Dutch Whispers
• Killer Cages
• Arrows
• Ten Lines
• 159 + Even - By GoodCity