Nice start, right? Some interesting statistics that make me question his authenticity though.
Beat C-17 4 times.
Beat Elros Tuvenal 3 times.
Beat Gnuffone 2 times.
Beat Longhouse 2 times.
Beat Koxyli 2 times.
Beat various players one time; none of which are rated above 2000.
Now the wins vs Gnuffone, Longhouse and Koxyli seem legit. What makes me suspicious is his 7 wins vs the 2 French guys. He is French also. Is this a coincidence? C-17 is 35-9 if you take out games against Yves. To lose 4 times vs Yves with no wins seems odd. Elros is 34-16 without the games against Yves.
I just have a hard time believing someone could go 11-0 vs players rated 1995 or higher. Especially when 7 are against someone from the same country. Any thoughts on this? Am I just paranoid? Or is Yves cheating on the ladder?
Conclusion: From my point of view, Yves seems to be an alt and is likely the same person as C-17 and Elros Tuvenal. But one thing we know for sure: Yves is a very good player and it is unlikely he will drop out of the #1 spot until Szeweningen rejoins.