Out and about with my good mate WhiteFriar picking up, even for us, an eclectic mixture of caches! Perfect caching weather throughout, dry and nicely warm.
After a slow start the number of Challenge caches collected has soared in the last couple of months, greatly helped by the efforts of RubyShoos who's set 27 challenge caches (so far!), many of which I have now collected. So now I am qualified for all the currently placed challenges in this series and for the final, as yet, unpublished one. See my web page http://www.15ddv.me.uk/geo/chal/the_challenge_cache_challenge.html for the evidence.
Getting late, so losing the light, but a quick find here.