Since 1891 we"ve been making the finest puzzles and it"s our attention to detail, which makes Ravens burger the world"s greatest puzzle brand. Experience a puzzle quality your child can grow with - piece by piece. Ravens burger puzzle pieces are extra durable to withstand the demands of little hands. Our puzzles help your child to develop hand-eye coordination, fine motor skills, problem solving, shape recognition, memory, task completion and independent play. According to psychologists a child"s brain development is positively influenced when a child acts on or manipulates the world around him or her. Puzzles provide that key opportunity.