I'll not correct that one. If it was genuine set problem then yes.
But 1...Qxd4 is tantamount to resignation.
Thanks for you comment. I had a sudden Family, Work and Health
issue that came up and will continue to affect me for weeks so rushed it a wee bit.
Left out this one which was rather annoying when I realised I missed it.
Apparently, according to the 'The Chess Player's Bedside Book'. (Bott & Morrison)
It is the oldest known problem of it's kind. (from 1500) White to play and mate in 5.
You have to be a bit wary when someone drops one of these
in your lap with a date like 1500. Sometimes it means that today's
rules regarding castling, pawn promotion, en passant, etc...etc...
were not yet in place. But here there is no such trick. It is sound.
A wee clue.
If it were Black to move then it's mate in two.