Straights

Straights (Str8ts, Stradoku) is a Sudoku-like logic puzzle. Enter a number in each white cell so that the numbers horizontally and vertically form a gapless sequence of numbers.

Rules: A number from the range 1-N must be entered in each white cell of the N×N grid. No number may appear more than once in any row or column (whether on a white or black cell).
The numbers in a horizontal or vertical strip of connected white cells must form a sequence without gaps but not necessarily in the correct order (e.g., 1-2-3 or 6-4-5-7).