Clock is a very important aspect of practical chess. You may be a very good chess player but lose a lot of games because you getting short on time and making blunder as a result. In order to perform at your best, good time managing technique is required. What do I mean by that? Let’s say you have 75 minutes with 5 seconds delay for 40 moves and 30 minutes for the endgame (it is a typical time control for many tournaments). At this time control a player should spend just under 2 minutes per move for the first 40 moves.