Einstein's Riddle Logic Puzzles – 3.8.4

Einstein Challenge is a logic problems puzzle to challenge your brain. It is known as different names, such as Logic Problems, Logic Games, Dell Puzzle, Zebra Puzzle or Sherlock Holmes Puzzle. Hundreds of Riddles: 2500 logic riddles, all free! No packs to buy. Increasing Difficulty: Several grid sizes, from 4x4 to 12x9 - the bigger the harder.