Quick Quiz

Ok, fingers on buzzers.

Have a look at this painting.

Think how minimal it is, the flat planes of colour, the large negative space, the overall shape, the strange subject.  

What is the subject, exactly?  How would you describe it?  How does it make you feel? How is it painted?  Why had it been painted?

So - who painted this picture, and when?
(No looking it up on Google!!)