Some tournaments have too long rounds (Long Haul, for example), with more than 6 months. Some challenges have similar problem: the chessplayer does 1 move/7days TO. Parallel with the traditional tourns./challenges, we can create tournaments and challenges with decreasing time.
Long Haul Duel MMVII Decreasing
Initial TO: 21 days - Initial TB: 21 days.
Decreasing time: 3 days TO/TB every 60 days after the start of the tournament.