Quiet meetings at the front
- Killer cages
- Arrows
- Whisper lines
The brief
Standard sudoku rules apply: each row, column, and 3x3 box must contain all the digits from 1 to 9.
Digits along an arrow must sum to the digit in the arrow's circle.
Digits in a cage cannot repeat, and must sum to the small number in the corner of the cage.
The green line is a German Whispers line: consecutive digits along the line must have a difference of at least 5.
The blue line is a Dutch Whispers line: consecutive digits along the line must have a difference of at least 4.