Uwe Meffert is a German mathematician and puzzle designer, best known for his work in the field of twisty puzzles, particularly the Rubik's Cube. He has created several innovative puzzle designs and contributed to the development of various puzzle-solving techniques. His contributions have made a significant impact on the puzzle community. In addition to his puzzle designs, Meffert is recognized for his role in promoting competitive puzzle solving. He has organized events and competitions, helping to foster a global community of puzzle enthusiasts. His work continues to inspire both casual solvers and serious competitors in the world of twisty puzzles.