complications

Complications, imbalance, same thing.  Although "complications" entails more than a little imbalance

Sometimes you walk the fine line between imbalanced/unclear and obvious disadvantage though.

You can do it by sacrificing for an attack or for passed pawns for example.  Or when they're attacking / creating threats instead of making certain defensive moves you create counter threats immedaitely.

A well known example was when Topolov was trying to avoid a rapid playoff with Anand in the world championship match.  So he played for complications to the extreme.  In a dull position that would almost certainly have been a draw he started advancing his kingside pawns and went for an all or nothing attack.

Thanks waffllemaster.