Consensus
Rules:
- Classic Sudoku:
Every row, column and 3x3 box must contain every number from 1 to 9.
- Maximum/Minimum:
A grey cell with arrows pointing outward must have a value greater than all its orthogonal neighbours; a grey cell with arrows pointing inward must have a value lesser than all its orthogonal neighbours.
- Same Groups:
The group formed by all the marked maximum cells and the group formed by all the marked minimum cells must contain the same values.
- Kropki:
Two digits separated by a black dot have a ratio of 1:2.
Play it online in SudokuPad.
This puzzle is also on Logic Masters Germany.