61
by FullDeck & Missing a Few Cards
Indigestion
- Kropki dots
- Whisper lines
- Renban lines
- Killer
- German whisper
- Kropki difference
The brief
Happy Birthday, Missing! Standard sudoku constraints apply: Every row, column, and box must contain a complete set of the digits 1-9. German whispers: Adjacent digits on green lines must differ by at least 5. Renban lines: Digits on purple lines for a nonrepeating set of consecutive digits in any order. Kropki dots: Digits separated by a white dot are consecutive. Not all possible white dots are given.