Yakazu

Yakazu (Kurosu) is a logic puzzle. Enter a number from the range 1-N in each strip of white squares.

Rules: A number must be entered in each cell. Some numbers are already entered and may not be changed.
Each horizontal and vertical strip of white cells of length N must contain all numbers from 1 to N exactly once, regardless of the order (1-2-3 or 3-1-2 are both permitted).
Strips of length 1 (single fields) may contain any number.