I have read the "an passeant" rule few times, but I can find the logic on it. All the chess "eats" happens with one block (don't if it's how you say it, maybe pieces) moving to another's house. So one of the chess's blocks is eliminated from the tableland when is attacked from another block that assumes his house. I don't understand why the need of this rule that deny the chess's logic of eliminating blocks.

