What is Irregular Opening?

An Irregular Opening in chess refers to any opening that does not conform to the conventional patterns, rules or strategies normally employed in the initial moves of the game. These openings, which are not used frequently in professional or competitive chess, depart from the recognized or standard sequence of moves. They are considered unorthodox and can sometimes serve to surprise or confuse an unprepared opponent. The term is usually used to denote openings that are not part of larger, named openings or systems.