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This item is a game information page
It belongs to categories: Orthodox chess, 
It was last modified on: 2010-02-10
 By Charles  Daniel. Colossus. Large-board chess with standard pieces and double the number of bishops, rooks and knights. (10x10, Cells: 100) [All Comments] [Add Comment or Rating]
Fergus Duniho wrote on 2015-04-17 UTC
Now that you mention it, the rules do specify that the King can move to the Rook's space when castling. I missed it, because I wasn't expecting this kind of departure from the rules of Chess. It can be programmed by recognizing an intention to castle when either the King or Rook makes part of a castling move that would otherwise be illegal. This would be if the King moves two or more spaces, including to the Rook's location, or if the Rook moves to the King's location.