Logic Masters Deutschland e.V.

This is the 1±1nd puzzle in what might become a series, because i crack myself up trying to set them - the cages look ridiculous! The previous puzzle Loosing my precision 9 (±9) was all about exploring the rule's potential and my personal goal of making it look impossible. This puzzle is an attempt to go in a completely different direction - to enhance the sudoku experience instead of completely replacing it and on a personal level to learn how to adjust the difficulty just right for the most fun. Please let me know if there's an aspect i should work on harder. Oh and i noticed i'm using 1±1 "o"s in the titles, never know with this word, i'm sticking with it - either it's correct or funny.

Puzzle available in f-puzzles and Penpa+. Note: f-puzzles software won't be able to reliably check the solution because these are not standard cages, Penpa+ version has a solution check.

Normal sudoku rules

• each box, column and row contains digits 1 to 9 once each

• digits cannot repeat within a cage
• number in the top left corner (if given) is the sum of digits in that cage with the first digit as it's precision; for example digits in a cage with given sum 20 (±2) add up to 18, 19, 20, 21 or 22