X-Style is a new competition for Freestyle riders who mostly focus on skills. It was designed to be more interesting and entertaining than Standard Skill for the competitors and the audience. In X-Style every competitor gets 2 minutes time to show her skills to the judges. The rider showing the most difficult skills wins the competition. It doesn't matter how often a skill is tried or how many dismounts there are. Only mastered skills count.
Have a look at the Rules.
If you want to host a X-Style competiton have a look at Hosting.
Helpful advices and and tips for judges can be found in the Judging Guide.