Claudio's audio is the beginning of a lesson he held to his students,
After the holidays.
This is the translation:
"Hello to all chess players,
I'll be yours on Thursday too.
Just to give you some chess hammered.
But in the meantime I'm launching a challenge,
To see how much you've been ruffling during the summer.
Try to solve this challenge:
Position of White:
Position of Black:
White moves and wins,
Or the black moves and is draw.