Logic Masters Deutschland e.V.

I initially set this puzzle as an example for my previous S-cell puzzle. But I changed my mind and dropped the X-Sums rule for a combination of RSL and renban. I still like the logic in this little one, so I decided to share it here as a standalone "coffee break" puzzle. Expected difficulty 1-2.

I hope you enjoy ! And if you do, do check out the bigger one, which involves more complex interactions between the grids.

Rules :

- Normalish sudoku rules apply : for each grid, select 5 of the digits from 0 to 9. Each row, column and 2x2 box must contain these 5 digits with no repeats. To allow this, place one S-cell that contains 2 digits in each row, column and box.

For the left grid, you cannot use the 0.

For the right grid, you have to use 0.

- On renbans and for X-sums counts, the value of an S-cell is the sum of its 2 digits.

- Grey areas outside those grids do not contain digits (apart from the given X-sums clues).

- X-sums : outside clues give the sum of the X first cells seen in the direction of the clue, where X is the value of the first cell.

- Renban : each red line is a renban and must contain a set of non repeating consecutive integer values in any order (e.g : 8-10-9). Digits can repeat on the lines if allowed by other rules (e.g : 7-17).

Solve with Penpa.

Solve with CTC webapp.

I recommend solving with Penpa, because it has answer check on S-cells too, and the pencilmarks show better on the lines.

Enjoy ! And consider giving feedback if you appreciate the puzzle !

You can check out my other puzzles here if you liked this one.