Dear Everyone. Just joined to ask this question, really. Was watching Tetris videos on YouTube, the CTWC, and the commentator was talking about players getting a 'dirty Tetris'. Now I'm probably the world's worst tetris player because I'm disabled and don't have fast fingers but I love watching it. And I can't work out what a 'dirty Tetris' is. If it's one where the well isn't down one of the sides, does that mean anyone with a central well ONLY scores dirty Tetrises? And why are they dirty? Are they foul play/technical fouls? I don't understand. yours hopefully Chris.