iPhone app SUDOKU - 5700 original puzzles download it using MyAndroid.

5700 puzzles, all of which are original.

Beautiful puzzles (they are designed in various forms)

Cunning traps and original logic puzzles.

To improve logical thinking ability and memory.

All puzzles were created by the puzzle designer Naoki Inaba.
They are not automatically generated puzzles.

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 colour to your favorite colour

You can turn sound effects on or off

You can change the colour of the selected number to make it easier to spot

You can highlight rows, columns and blocks with different colours

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),

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