Nonograms are logic puzzles that consist of a grid filled with cells that can be either black or white. The objective is to color the cells according to numerical clues provided for each row and column. These clues indicate the lengths of consecutive blocks of filled cells, helping players deduce the correct pattern. Players solve Nonograms by interpreting the clues and using deductive reasoning to fill in the grid. The completed grid reveals a hidden picture, making the puzzles both challenging and visually rewarding. They are also known as Picross or Griddlers in different regions.