Madam, - Permit me to wish Derek Crozier well on achieving 60 years of bedevilment of the Irish crossword addict. Unique is a word often bandied about, but the style of clue he has developed knows no parallel that I am aware of.
As homage on this occasion, I offer the clue: "Crios by Crosaire (1,4,2,3,7)." - Yours, etc.,
GORDIUS (Brendan Treacy), Drumree, Co Meath.