Grid puzzles are logic-based games that involve filling in a grid according to specific rules. Players typically use clues provided in the puzzle to determine the correct placement of numbers, letters, or symbols within the grid. Common types of grid puzzles include Sudoku, Kakuro, and Nonograms, each with its own unique set of rules and challenges. These puzzles can vary in size and complexity, making them suitable for different skill levels. They are often found in newspapers, puzzle books, and online platforms, providing a fun way to exercise problem-solving skills and enhance logical thinking.