Einstein's Riddle Logic Puzzle cover or packaging material - MobyGames

Enigma Viking Secret Puzzle Box - Money and Gift Card Holder in a Wood IQ Trick Lock with Hidden Compartments Brainteaser : Toys & Games

Einstein's Riddle Logic Puzzle - Apps on Google Play

The Einstein Collection Einstein's House Riddle/Riddle Based Brain Game/Professor Puzzle 3D Brain Teaser Puzzles : Toys & Games

Einstein's Riddle Logic Puzzle - Apps on Google Play

Professor Puzzle presents The Einstein House 3D Interlocking Wooden Puzzle Game suitable for both kids & adults. Includes 5 different colored houses

The Einstein Collection Einstein's House Riddle/Riddle Based Brain Game/Professor Puzzle 3D Brain Teaser Puzzles

Formed of the symbols of Einstein’s ground-breaking E=mc2 equation, see if you can separate the two pieces of each metal puzzle and then reattach

The Einstein Collection E=Mc2 Metal Brain Teaser Puzzle Set | 3 Pieces

Puzzle Express cover or packaging material - MobyGames

Ludology

Einstein's Riddle: Detective-Style Logic Activity - ALL ESL

Albert Einstein's Logic Puzzle, Maybe – David Pace, PhD, MBA

The Einstein Collection Einstein's House Riddle/Riddle Based Brain Game/Professor Puzzle 3D Brain Teaser Puzzles : Toys & Games

Einstein's Riddles and Grid Puzzles