Historical clue formulations

• Cube maker Erno — 2026-06-08
• Toy cube inventor Erno — 2026-01-12
• Eponym of a popular puzzle — 2025-11-04
• Author of the 2020 memoir "Cubed" — 2025-05-18
• Inventor who wrote "Cubed: The Puzzle of Us All" — 2024-07-14
• Noted Hungarian puzzler — 2018-11-28
• Cubist of note? — 2018-07-08
• Cube creator — 2014-10-15
• Inventor of a six-color puzzle — 2014-10-08
• Father of a 1980s craze — 2013-06-27
• 1980s craze starter — 2008-10-02
• Hungarian cube maker — 2007-01-15
• Cube creator Erno — 2006-09-19
• Cube creator — 2006-08-29
• Early 1980's craze maker — 2006-05-25
• Inventor of the Cube — 1999-11-24
• Cube creator — 1996-10-02
• 1980 fadmaker — 1994-04-29