New answers tagged chess
Doing a quick search for "chess" and "immobilizer" led me to Baroque Chess.
Fabian's answer makes it quite clear that this is not in the rules. For your followup, whether or not this is advantageous, the answer is the ever frustrating "it depends" Most novice games are decided merely by who makes the biggest blunder first. In that regard this doesn't really do much. In fact, by exposing your line quicker, you might be doing ...
This was never legal. Rule 1.1. of the FIDE rules clearly states that the moves have to alternate. This was probably more of a house rule. Of course you can advance a pawn two spaces on it's first move (Rule 3.7b).
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