Normal sudoku rules apply: Place the digits 1-9 in every row, column and box exactly once each. Digits along an arrow must sum to the digit in that arrow’s circle. Each arrow has its own colour. Arrows of the same colour are connected. Digits separated by a white dot are consecutive. Digits separated by a black dot are in a 1:2 ratio. Not all possible dots are given. One cell in the grid is your newly found “motivation”. Cells must increase in value as they move away from this point in every straight-line direction (i.e. vertically, horizontally and diagonally) until they reach the edge of the grid. Once found, everything will start to flow again. Additionally the grid is partially covered in fog just as your thinking might be impaired sometimes and not allow clear thoughts. Placing correct digits will clear the fog from surrounding cells, possibly revealing more clues.