Logic Masters Deutschland e.V.

Normal Sudoku rules apply.

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

Diagonal X-Sums
Clues outside the grid are the sum of the first X cells in the corresponding diagonal, where X is the digit in the cell nearest to the clue. Digits may repeat, and where X exceeds the number of cells in the direction, the sum bounces off the edge at a 90-degree angle and continues.

To play this puzzle please click here: Play CTC

I am trialing the idea of including hidden hints on the LMD page, hopefully making puzzles more accessible. Available below.

Special Thanks
This puzzle is clearly inspired by the following excellent puzzle:
Bank Shot by mathpesto.

Next Week Teaser
We have an exciting Yin Yang 'Dutch Flat Mates' lined up next week, from a new guest to the series (it'll be a surprise!). This puzzle has an unconventional twist on the 5s rule, with a slight rebrand to make clear that the rules are a little different.

Previous puzzles in the Dutch Flat Mates 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 and Even - By GoodCity
• Friendly Cells
• Quads
• Silent Killer - By GoodCity
• XV and Equality
• X-Sums
• Numbered Rooms - By GoodCity

Hint 1 - Where to look first

'76' is big, '58' is less big.

Where is 5 in Row 1?

Work downwards on the outside clues, but don't forget about 1s, 5s and 9s.