Divide the grid into regions, each consisting of nine orthogonally connected cells. Each row, column and region must contain the digits 1 to 9 once each. The digit in the top-left cell of a region (its leftmost cell in its highest row) is its region number. All region numbers are different. You must find an orthogonally connected path that visits every region exactly once, and the path must visit each region in ascending order of the region numbers. Within each region, digits strictly increase along the path. A digit in a cell with arrow(s) indicates the total number of cells in the same region as that cell that are part of the path, in the indicated directions combined. If a cell has multiple arrows, there must be at least one cell on the path (in the arrowed cell's region) in each of the clued directions.