CDT 2008 is definitely not the most spectacular event of the four we have organised so far, but that is, of course, because it was the first one. Everything was completely new to us. I mean, we already had a lof of experience with domino-building, but not with organising an event with 70,000 dominoes within three days. Compared to today, we also were a really small team: the six guys of IIIIIDominoIIIII, dominofan, shikamarusnooker, Snomoska and me. And if you also consider we were all still quite young, almost kids (with 16 years of age, dominofan was the oldest member), I think it's pretty amazing we managed to topple 70,068 dominoes.

The theme was "History of Rock". Only 167 failed to topple, which makes CDT 2008 by far the best of our events concerning the percentage of toppled dominoes. It was the only CDT without a failed project.

One year later, the team was almost the same, but there were a lot of improvements: Most of all, CDT had a professional look with some great lightning, which made the whole setup look much more spectacular than in 2008. It really was more spectacular though - there were more effects instead of just fields.

This year's theme was "Sports & Olympia", and the highlight was without a doubt the olympic rings, even though only four of them toppled. In the end, we had a new record of 87,804 toppled dominoes out of 90,000 we had set up.

CDT 2010 was different again - this time it was the team that changed. We welcomed five new members. We also stayed in the school all the time, instead of sleeping at the member's homes like in the years before. So we spent literally all the time together, and because of that, there was much more of a team spirit than in 2008 and 2009. It was an amazing week for all of us, we had a lot of fun and a lot of success, too: After a great performance on the Builder's Challenge by millionendollarboy, one of the new members, exactly (!) 116,000 out of 125,000 dominoes had toppled. The theme was "Inventions".

CDT 2011 was the worst event so far - when it comes to the success of the falldown. In every other respect, it was the best. Seven new members, including TimDomino and former Domino Day builder Marcel Kamps, got along with the old members so well that they soon felt as if they had been a part of the team for years. What I found most amazing was that even although it was an enourmous lot of work and stress, there was not a single serious argument between anybody.

While the team spirit and the mood during the ten days we spent together were great, we didn't really have a lot of luck with the dominoes. 30,000 dominoes didn't topple - more than half of that amount was made up by the end field. It was the first time the Builder's Challenge - and thus the end field - failed. But it was also the hardest Challenge we've had so far, and we weren't really sad for a long time, but celebrated in the same evening as if everything had worked perfectly.

After all, we did break our record and luckily at least reached the "magical number" of 125,000 toppled dominoes. 125,104 to be exact.