Rules: Fill the grid with digits 1 to n, so that each digit appears exactly once in every row, column and outlined region. Where a cell is divided into two triangles, exactly one of these triangles should contain a digit and the other one should be empty.
Background: This type was invented by Zoltan Horvath. You can find it more in this file (It was published in A Hungarian Puzzle Site by Zoltan). Zoltan prepared some HSS puzzles for Akil Oyunlari Magazine, Issue 75. 4th Part of 6th WSC was consisting of this type alone.