The Big Sudoku 2.3.5

The most popular large-format Sudoku puzzle on Android is now available for iPad, iPhone, and Windows 10.

Featuring Samurai Sudoku and 16x16 'Super' Sudoku, perfect for those seeking a longer puzzle-solving experience. Additionally, an unlimited supply of automatically generated 9x9 Sudokus is available for quick brainteasers.

The Samurai and Super Sudokus offer three levels of difficulty, all designed to challenge enthusiasts with engaging puzzles that require time and dedication to solve. No cheats or hints are provided, ensuring a truly rewarding solving experience. The 9x9 Sudokus are offered in four levels of difficulty, with the most challenging ones requiring advanced solving strategies compared to the larger puzzles.

While the app does offer aids such as auto-fill and automatic pencil mark updates, as well as the ability to highlight squares with potential numbers, there are no shortcuts to bypass the mental workout needed to solve each puzzle.

The Sudoku list now indicates whether automatic pencil marks or number highlighting features have been utilized, and the best completion time for each Sudoku considers this aspect. Completing a Sudoku without any assistance will be recorded as your best time, even if it's slower than a previous attempt where aid was used.

With auto-save functionality, you can work on multiple Sudokus simultaneously. For traditionalists or those who enjoy a challenge, there's an option to email a Sudoku to your computer for a printout—no highlighting assistance here, just you, a pen, and paper.

Due to the size of the puzzles, the app is optimized for tablets or large-screen phones. However, the grid can be zoomed in for play on different devices with some patience required.