Genera sudoku unici e illimitati con soluzioni incluse. Scarica il PDF — sempre gratuito.
Our free sudoku generator creates unique puzzles using a backtracking algorithm — the same method used in professional puzzle books. Every puzzle is generated fresh in your browser, so no two downloads are the same. Puzzles are formatted for US Letter (8.5" × 11") paper with large, clear numbers perfect for printing. The answer key page uses red numbers to clearly distinguish filled-in answers from given clues. Ideal for elementary classrooms, after-school programs, senior centers, and homeschool families.