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> http://www.youtube.com/watch?v=Bzrap8Vtyq8 http://www.youtube.com/watch?v=Bzrap8Vtyq8 I'm going to go for the most pedestrian, naive chess commentary ever by

• GraffitiTim 13y ago
  If you mean the vertical line (horizontal from camera perspective) of squares with no pieces on it, that's called an open file, and it's an important concept in chess. Rooks on an open file are generally more powerful.
  • haberman 13y ago
    That makes sense, though I was looking more at the diagonal formation that starts at the bottom left, goes up and into the middle, and then down back into the right corner. It looks like a tree-lined boulevard with a bend in it. :)