Leading ladder

On Monday I went to Boulders to try the Leading Ladder for the first time. I was given a yellow score sheet with a list of 10 climbs going down the page. The grades ranged from 5+ to 8a. The first 4 climbs were easy but the 5th one had a very hard move in the middle of the climb. I tried lots and used up most of my energy but saved a bit for the rest of the climb and managed to get to the top. The 6th climb was very difficult and I made it to the third last hold. I couldn't reach the last two holds because I had used up all my energy by holding a lock off on a crimp and clipping at the same time. I know all the moves now so next time I will be able to make the last moves because I will have more energy.