Logic Masters Deutschland e.V.

This is the second puzzle I set with rdrd. You can find our first collab puzzle here. It was a lot of fun working together on these puzzles and we're really happy with what we came up with. Thanks to all the testers for testing several versions and for their suggestions. Difficulty should be between 4 and 5. Do try the example puzzle that has some logic not used in the main puzzle. Other puzzles with liar X-Sums coming soon hopefully. Have fun!

The puzzle :

Play on Penpa.

Play on sudokupad.

Rules :

- Normal sudoku rules apply

- X-Sums : Clues outside the grid represent the total of the first X digits in that direction, with X being the digit in the first seen cell.

- Liar X-Sums : For each row/column with clues, two clues are provided. Only one of them (top or bottom, left or right) is correct. The other clue is lying and can never be correct.

- Cipher : Clues are encrypted. Each distinct letter represents some unique digit from 0-9. A "?" is a stand in for any digit 0-9, but for a single digit or double digit number, the first digit may not be 0.

Example puzzle (without the cipher):

Play on Penpa.

Play on Sudokupad.