Hashtag, No Boxes
- Kropki dots
- Whisper lines
- Renban lines
The brief
Every row and column must contain the numbers 1-9, without repetition. RENBAN: Numbers on purple lines are each a set of non-repeating, consecutive numbers, in any order. DUTCH WHISPERS: Numbers on the red line are at least 4 apart from their neighbors on the line. Numbers may repeat on the red line. KROPKI PAIRS: Numbers with a white dot between them are consecutive. Numbers with a black dot between them are in a ratio of 2:1. Not all possible dots are given.