Why is this checkmate?

What about it?

Why is rook b4 checkmate? If the white king takes the rook, the black queen can’t move because it’s pinned by the white rook.

What's the best play to protect my Knight here?

I did it! I know this sun is riddled with these posts but I never thought this day would come!

Thanks, i hate muscles

Thanks, I hate impatient seeds

Thanks, I hate emoji scissors

Thanks, i Hate the Cube

Thanks, I hate banana skins

Thanks, I hate this bathroom sign

Thanks, I hate when Mario has a fist the size of his body

Thanks, I hate people tracks.