It's Orla 'Bout You
- Whisper lines
- Parity lines
- Modular lines
- Entropic lines
The brief
Deduce which six digits from 1-9 are used in this puzzle, and fill the grid with them so that no digit repeats in any row, column or box.
The teal O is modular. Any 3 adjacent digits along this line must contain one digit from each of these sets: [147][258][369]
The red R is a parity line. Any 2 adjacent digits on this line have different parity.
The yellow L is entropic. Any 3 adjacent digits along this line must contain one digit from each of these sets: [123][456][789]
The green A is a German Whisper. Any 2 adjacent digits on this line must have a difference of at least 5.
A balloon sits on a domino between two consecutive digits, and the string points towards the smaller digit. All possible balloons are given!