Can you identify this flag? 
Chess Daily News from Susan Polgar
Which flag is this?
About Author
Can you identify this flag?
It is a drawing by Sofia Polgar.
Oklahoman flag 9 centuries ago.
I think it’s Hufflepuff, but it might be Ravenclaw, I’m not sure.
I know this blue and yellow flag! I saw it at
http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts116/index.html
It must be Ukrainian.
Okay, Susan we give up. What is the correct answer to the question. Give!
Oh, were you interested because the tower looks like a rook?
In heraldry, a chess-rook (so called to distinguish it from the bird) has two outward-splayed horns to distinguish it from the tower.