Logic Masters Deutschland e.V.

This is a puzzle that I created for wisty's birthday, which they encouraged me to share with all of you. This puzzle uses the Shivers genre that wisty created, please check their puzzles out if you haven't already. :) A visual example of how Shivers work can be found on the original Shivers puzzle page.

Ratings, comments, and feedback are much appreciated! Please feel free to reach out to me on Discord if you have any comments or questions. Please also feel free to try my other puzzles here.

Rules:

• Shivers: Draw shivers in the grid such that all unshaded cells are covered and no shaded cells are covered. Shivers are non-intersecting lines of at least length 3 which only move orthogonally and turn at 90° angles on any cells other than their endpoints. A dashed circle indicates an endpoint of a shiver. A clue in a cell indicates the length of the shiver occupying that cell (length is counted in cells). A line cannot contain more than one letter, and may contain no letters.
• Irrwisch: All clues are encrypted. The letters A, B, C, and D are each an irrwisch, which represent a different number every time they appear.

Penpa+ (includes note taking space to track digits used by irrwisches): https://tinyurl.com/2cswcvnx