Smart Sudoku Gameplay - Follow the puzzle LED screen to set a game, the goal is to fill in the blank blocks so that the number does not repeat in each column, row, and box.Also supporting auto timer,real-time feedback,hints and 1V1 battle! Challenge Sudoku Experience - 4x4 and 6x6 Sudoku grids to match your proficiency. Featuring 3500 levels sudoku puzzles spanning from beginner to master levels, it guarantees a thrilling, progressively challenging experience for all ages. Ultra-Portable Travel Game - Ditch the bulk of traditional Sudoku books. Our compact digital sudoku fits effortlessly into school bag, allowing you to indulge in the joy of puzzle solving anytime, anywhere. Get Benefits - This brain teaser puzzle will bring hours of fun and entertainment all while improving your memory, early math, critical thinking, logic and problem-solving skills. Nice Gift Idea - Whether you're looking for a holiday treat, a birthday surprise, or a spontaneous delight, this sudoku number game promises enduring fun and cognitive rewards. Perfect for Halloween, Christmas, stocking stuffers, or even as a homeschooling resource.