If you have a regular opponent, try to work out his/her strengths and weaknesses. If they like a nice open board where they can make clever plays then try to keep the board tight. Conversely if your opponent likes a tight, defensive board then open the game up. Generally, if you are playing someone who has a superior word knowledge to you then try to keep the board confined and they will have less chance of utilising that knowledge.

When you're making a move consider how it might help your opponent. For instance: you have a choice of playing DEBUT or using the same letters as TUBED. If you play DEBUT, your opponent might have an S whereas TUBED cannot be extended and where the scores are close this may be the better move.