Thanks for contacting me although I also have to say I was a bit surprised to receive this email.
I spent an afternoon with Markus whilst he climbed. After that he showed me where Gossip was (I had been climbing that morning so I didn't climb that afternoon, then I briefly tried Gossip in the evening although by that time I was far from focused especially given that my {non climbing} wife and I had been out climbing for about 9 hours and I knew that she wanted to go). In the subsequent days I worked out a totally different (and for me easier) sequence to that which Markus had used and had had me trying that initial evening. Indeed on the day I climbed the problem I found a further refinement to my sequence that was for me the key to my success especially when allied to that mornings good conditions and the fact that I climb better first thing in the morning (I generally climb a number of grades harder before lunchtime than I do after). We also discussed Riot Act, where we had both used virtually identical sequences. After that I exchanged a couple of texts (SMS), at no point did Markus raise this issue with me.
Regarding Zerberus I'm really puzzled. As Markus knows I was misinformed as to the exact line of the problem and hence didn't actually climb it, although prior to discovering this misinformation over the line I thought I had climbed it.
As regards other things, both in my local area and elsewhere, various people have seen me either doing them or doing all the moves whilst working them. Indeed I have shown people the moves on many of these things by climbing them (the individual moves) after my ascents. In addition there is video footage of me climbing (i.e. linking all the moves together) on most of my hardest "sends".
Certainly at this point in time I have nothing to gain from claiming things I haven't done. I am not, and never have, tried to build a reputation etc indeed I will very soon move on to concentrate on my work career. I did the problems (in the Frankenjura) purely for myself, as with everything that I have done. Indeed when I first started trying most of my hardest problems (i.e. those in my local area), bouldering was not a major activity. I am saddened that people now wish to maliciously claim, without any foundation, that I have not climbed these things when I have worked hard over many years, both in terms of training time and also the physical number of days trying these things prior to completing them. [1]