Logic puzzles are great for boosting intelligence. They help people improve their problem-solving skills and develop critical thinking. Sudoku and crosswords are popular examples. These puzzles encourage pattern recognition and logical reasoning, which can enhance concentration and attention to detail. They're a fun way to exercise the brain and keep it sharp.

Jigsaw puzzles are another type that can improve intelligence. They help boost spatial awareness and visual perception. Working on a jigsaw puzzle can also improve memory and cognitive function. It requires patience and persistence, and recognizing shapes and colors is a key part of the process. Plus, when done in groups, they promote teamwork and collaboration.

Brain teasers and riddles are also effective in improving intelligence. They stimulate creative thinking and imagination, challenging conventional thought processes. These puzzles improve verbal reasoning and comprehension, encouraging lateral thinking and out-of-the-box solutions. They provide a fun and engaging way to learn new concepts and keep the mind active.