Everyone can try a few sudoku puzzles for free, but Apple News Plus subscribers can play new puzzles every day. An Apple News Plus subscription is $13 a month and gives you access to daily Sudoku and other puzzles, like Quartiles, as well as stories from publications like the New Yorker and the Wall Street Journal.

Here's where you can find sudoku on your iPhone and what to know about the game.

Where are sudoku puzzles on iPhone?

1. Open News. 
2. Tap Following across the bottom of your screen.
3. Tap Puzzles.
4. Tap Sudoku.

There are three puzzles near the top of the menu marked as Free to Play that everyone -- even non-Apple News Plus subscribers -- can play. These puzzles are usually at least a week old, and Apple also marks these as Easy, Moderate and Challenging, denoting each puzzle's difficulty. Tap any of these to play.

Below the Free to Play puzzles you'll find new daily puzzles and an archive of puzzles Apple News Plus subscribers can play at their leisure.

What do I need to know about sudoku on iPhone?

If you're unfamiliar with Sudoku, you have to place the numbers one to nine into a square 9x9 grid. There are nine 3x3 blocks within that grid, and you have to place the numbers in each block, row and column so there are no duplicate numbers in each. That means a block can't have the number two twice, for example, and the same goes for each row and column.

On iPhone, you can enter a number into a space by tapping the Pen option beneath the puzzle, tapping the space you want to answer for and then tapping the number at the bottom of the screen. If a particular space can have two or three numbers in it, you can tap Notes next to Pen and then choose all the numbers that can be placed in the space to keep track of things.

How do I know if a number is in the right spot?

If you want to check your number placements you can enable Autocheck. Here's how.

1. Open News. 
2. Tap Following across the bottom of your screen.
3. Tap Puzzles.
4. Tap Sudoku.
5. Tap a puzzle.
6. Tap the square with a checkmark in the top right corner of the screen.
7. Tap Autocheck.

Now if you place a number in the wrong spot, your iPhone will mark the number with a red slash through it. Your iPhone won't mark numbers placed in the correct spot.

How do I restart a puzzle?

Here's how to restart a puzzle for any reason.

1. Open News. 
2. Tap Following across the bottom of your screen.
3. Tap Puzzles.
4. Tap Sudoku.
5. Tap a puzzle.
6. Tap the square with a checkmark in the top right corner of the screen.
7. Tap Clear Puzzle.

All your answers will vanish and you can start the puzzle fresh.

For more on iOS 18, here's what to know about