・5700 puzzles, all puzzles were created by the puzzle designer Naoki Inaba.
・Beautiful puzzles (they are designed in various forms)
・Cunning traps and original logic puzzles.
・To improve logical thinking ability and memory.
・Hybrid operation that allows you to choose both number-first and cell-first methods.
・Sudoku Palace is the official sponsor of the Japanese national team for the World Sudoku Championship. *Held every year

■■8 levels of difficulty■■
Beginner
Novice
Intermediate
Advanced
Challenge
Challenge+
Ultimate challenge
Ultimate challenge+

■■Explanation on how to solve all the puzzles■■
・Full House
・Hidden Single
・Naked Single
・Locked Candidates
・Hidden Pairs
・Naked Pairs
・Naked Triples
・Hidden Triples
・X-wing
Explanations of all puzzles using novice to advanced solving techniques, complete with diagrams (uses Coins)

■■Improved Hint function■■
・In addition to showing the correct number, there will also be an explanation on why that number is the correct option.

■■Functions On the settings page■■
・You can write down candidates for each cell
・You can set the background color to your favorite color
・You can turn sound effects on or off
・You can change the color of the selected number to make it easier to spot
・You can highlight rows, columns and blocks with different colors
・You can adjust the placement of the numeric keypad
・Auto-save
・Start Over, Undo, and Reset buttons
・Enter All Candidates and Delete All Candidates functions
・Checker function to check if the number is correct (uses Coins)

// Option A // q4a1w

To Sudoku - 5700 original puzzles mod from happymod.freeflix.info.
You need enable the option "Unknown Sources".
1. Click on the above link to Sudoku - 5700 original puzzles mod APK.
2. Save the file in your device s folder.
3. Now tap on Install and wait for the installation to finish.
4. Once it is done, open the game and start playing it right away.

// Option B // 55m4l

To Sudoku - 5700 original puzzles from HappyMod APP, you can follow this:
1. Open your browser and the HappyMod APK file from happymod.freeflix.info - the only official website of HappyMod.
2. Open Android Settings and go into Privacy or Security.
3. Tap the option to Allow Unknown Sources and enable it.
4. Go to your Android s and tap the APK file.
5. Follow the directions on the screen to install it.
6. Search Sudoku - 5700 original puzzles in HappyMod App.