Gordian Knot.

Gordian Knot (Γόρδιος δεσμός) (Nodus Gordianus) was a very difficult knot in Greek myths and legends.

Phrygia (Φρυγία) (Phrygía) was a kingdom without king. Simple man named Gordias (Γορδιάς, Γόρδιος) (Gordias, Gordius) became a king of Phrygia. He called the capital after himself: Gordion (Γόρδιον) (Górdion, Gordium). Also, Gordias created the knot.

Alexander the Great cut the Gordian knot.

There is a metaphor that means solve difficult problem about the Gordian Knot.

Midas.

Midas (Μίδας) was a king of Phrygia in Greek myths and legends. Gordias (Γορδίας) and Cybele (Κυβέλη) were his adopted parents.

He had donkey ears.

Midas met with other mythical characters, such as: Orpheus, Silenus (Σειληνός), Dionysus, and etc.

He had a special gift: everything he touched turned to gold. Then Midas got rid of this gift.