What are the red miles? I didn't even understand while reading.

They’re a power granted by the Queen’s Ring. Someone recently put it in wonderful terms- The King’s Sceptre makes the King huge. He’s big and powerful, but he’s slow and cumbersome- Just like how the King in Chess can only move one step at a time. The Queen’s Ring, instead, grants the Red Miles- An Omnidirectional attack with Infinite reach. Just like the Queen in Chess.