Chess Endgames 6: Endgame Principles - Domination & Prophylaxis Chess Software Karsten Mueller's endgame course is a modern classics in the study of the endgame. The principles dealt with in this DVD are domination and prophylaxis, don't be over-hasty, zugzwang and schematic thinking. Strategies for the restraint of the individual pieces are demonstrated, with a lot of emphasis on keeping Knights on a short leash. Prophylaxis means spotting your opponent's ideas and plans early on, so that you can take counter-measures. Important techniques such as triangulation and the battle for reserve tempi are dealt with in detail.