Crossword puzzles with numbers, often called number crosswords, combine traditional crossword clues with numerical answers. Instead of filling in letters to form words, players use numbers that correspond to specific clues. Each number typically represents a word or phrase, and the grid layout resembles a standard crossword. These puzzles can vary in difficulty and often include themes or categories, such as math, science, or history. Players must think critically to solve the clues and fill in the grid correctly, making them a fun and engaging way to challenge one's problem-solving skills while enjoying a numerical twist on classic crosswords.