The Sudoku surfers app is a fun and challenging puzzle game that allows users to test and improve their logical thinking and problem-solving skills. The app presents users with a 9x9 grid, which is divided into nine smaller 3x3 grids. Each row, column, and smaller grid must contain the numbers 1-9 without repeating any number.

The app offers various difficulty levels, from easy to hard, making it suitable for players of all skill levels. Users can select the level they feel comfortable with and start playing right away.

The app features a user-friendly interface, making it easy to navigate and play. Players can fill in the numbers by simply tapping on the squares and selecting the appropriate number. The app also provides useful tools, such as hints and an undo option, which can be used to help solve the puzzle.

In addition, the app allows users to track their progress and achievements, such as the number of puzzles solved and the time taken to complete them. Users can also compete with friends and family by sharing their progress on social media platforms or challenging them to complete puzzles.