This is a Heyacrazier puzzle, a variant of Heyacrazy.

Rules of Heyacrazy:

>  - Shade some cells of the grid.
>
>  - Shaded cells cannot be orthogonally adjacent; unshaded cells must be orthogonally connected.
>
>  - When the puzzle is solved, you must not be able to draw a line segment that passes through two borders, and does not pass through any shaded cells or grid vertices.   
>
>For an example puzzle and its solution, see [this question](https://puzzling.stackexchange.com/questions/87231/heyacrazy-crosses).

Rule change for Heyacrazier:

> - **The forbidden lines are now those that pass through *three* borders, instead of two.** Lines that pass through only two borders are acceptable.

[![enter image description here][1]][1]


  [1]: https://i.sstatic.net/JgjOH.png