Features How to Play
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✨ Make your brain smile!

Play Classic, Killer,
Sandwich & Mega Sudoku.

Experience the ultimate puzzle collection. Master Classic, Killer, Sandwich, Mini Sandwich, Diagonal, Little Killer, Mega 16x16, and Mini 6x6. Sudoku - Brain Puzzles brings color, life, and tactile joy to the game.

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◆ Classic 9×9 ◆ Killer ◆ Sandwich ◆ Mini Sandwich ◆ Diagonal ◆ Little Killer ◆ Mega 16×16 ◆ Mini 6×6 ◆ Daily Challenges ◆ Classic 9×9 ◆ Killer ◆ Sandwich ◆ Mini Sandwich ◆ Diagonal ◆ Little Killer ◆ Mega 16×16 ◆ Mini 6×6 ◆ Daily Challenges

Why you'll love it

We took the classic game and polished it until it shines. No clutter, just pure logic bliss.

Classic Sudoku

Endless puzzles with unique solutions. Choose from Easy, Medium, or Hard and enjoy a clean, distraction-free design.

8 Game Variants

Play Classic, Killer, Sandwich, Mini Sandwich, Diagonal, Little Killer, Mega 16x16, and Mini 6x6 Sudoku.

Daily Challenges

A fresh puzzle every midnight. Build your winning streak and check the calendar to replay past days.

Smart Hints

Don't just get the answer—learn WHY. Our hints teach you the logic behind every move, making you a master.

Customization

Make it yours with 4 unique themes (Geometry, Ocean, Fruity) and full Light/Dark mode support.

Seamless Sync

Play anywhere. Your progress syncs across all devices via iCloud, complete with Game Center leaderboards.

🧩 Game Rules

How to Play

Master 5 exciting Sudoku variants. Pick one and learn the rules!

1

Fill the Grid

Place numbers 1-9 in every empty cell to complete the puzzle.

5
3
7
6
1
9
5
9
8
6
8
6
3
4
8
3
1
7
2
6
6
2
8
4
1
9
5
8
7
9
2

Each Row

Every row must contain numbers 1-9 exactly once. No repeats!

5
3
4
6
7
8
9
1
2
6
7
2
1
9
5
3
4
8
1
9
8
3
4
2
5
6
7
8
5
9
7
6
1
4
2
3
4
2
6
8
5
3
7
9
1
7
1
3
9
2
4
8
5
6
9
6
1
5
3
7
2
8
4
2
8
7
4
1
9
6
3
5
3
4
5
2
8
6
1
7
9
3

Each Column

Every column must contain numbers 1-9 exactly once. No repeats!

5
3
4
6
7
8
9
1
2
6
7
2
1
9
5
3
4
8
1
9
8
3
4
2
5
6
7
8
5
9
7
6
1
4
2
3
4
2
6
8
5
3
7
9
1
7
1
3
9
2
4
8
5
6
9
6
1
5
3
7
2
8
4
2
8
7
4
1
9
6
3
5
3
4
5
2
8
6
1
7
9
4

Each 3×3 Box

Every 3×3 box must contain numbers 1-9 exactly once. No repeats!

5
3
4
6
7
8
9
1
2
6
7
2
1
9
5
3
4
8
1
9
8
3
4
2
5
6
7
8
5
9
7
6
1
4
2
3
4
2
6
8
5
3
7
9
1
7
1
3
9
2
4
8
5
6
9
6
1
5
3
7
2
8
4
2
8
7
4
1
9
6
3
5
3
4
5
2
8
6
1
7
9
1

Basic Rules Apply

Each row, column, and 3×3 box must contain 1-9 exactly once.

Rows Columns 3×3 Boxes
2

The Board

Dotted lines show cages. Small numbers are target sums.

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3

Cages with Sums

Numbers in each cage must add up to the target sum.

10
1
2
3
4
1 + 2 + 3 + 4 = 10 ✓
4

No Repeats in Cages

Numbers cannot repeat within a cage, even if the sum is correct.

10
1
2
3
4
✓ All different
10
2
2
3
3
✗ Repeats!
1

Basic Rules Apply

Each row, column, and box must contain all symbols exactly once.

Rows Columns 4×4 Boxes
2

The Board

A 16×16 grid using numbers 1-9 and letters A-G (10-16).

G
F
C
8
A
3
3
E
9
4
F
1
D
C
G
8
D
4
2
5
D
3
1
C
A
7
4
4
F
2
9
B
5
D
6
7
F
8
B
7
4
D
3
A
B
9
F
1
8
D
F
C
G
6
2
A
7
B
G
F
8
D
1
3
A
D
2
8
A
4
7
B
E
9
6
1
8
8
1
C
E
B
4
F
6
9
B
4
E
5
G
D
1
A
3
7
B
9
3

16×16 Grid

Uses numbers 1-9 and letters A-G (representing 10-16).

16 Grid Size
4×4 Box Size
1-9 Numbers
A-G Letters
4

16 Symbols

Each row, column, and 4×4 box must contain all 16 symbols exactly once.

1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
G
1

Basic Rules Apply

Each row, column, and 3×3 box must contain 1-9 exactly once.

Rows Columns 3×3 Boxes
2

The Board

Clues surround the grid showing sums for each row and column.

22
7
9
19
22
9
9
0
0
7
14
35
3
10
0
8
7
4
4
1
9
1
7
8
6
2
5
4
1
3
2
1
6
6
8
5
3
4
9
7
4
7
8
7
14
35
3
10
0
8
7
4
22
7
9
19
22
9
9
0
0
3

The Sandwich

Clues show the sum of numbers between 1 and 9 in each row/column.

15
3
1
4
5
6
9
2
7
8
🍞 Bread (1 & 9) 🥬 Filling
🍞 1 and 9 are bread → 4+5+6 = 15
4

Understanding Clues

The clue equals the sum of all digits between 1 and 9 in that row.

0 = 1 and 9 are adjacent (no filling)
35 = 2+3+4+5+6+7+8 (all between)
45 = Sum of each row, column & box (1+2+...+9)
1

Basic Rules Apply

Each row, column, and 3×3 box must contain 1-9 exactly once.

Rows Columns 3×3 Boxes
2

The Board

A standard 9×9 grid with two highlighted diagonals.

7
9
2
3
1
9
5
8
4
1
6
7
1
5
4
9
2
5
8
9
5
7
3
6
5
4
2
8
2
9
1
3
4
6
5
3

Main Diagonal

The diagonal from top-left to bottom-right must also contain 1-9.

1
2
3
4
5
6
7
8
9
4

Anti-Diagonal

The diagonal from top-right to bottom-left must also contain 1-9.

1
2
3
4
5
6
7
8
9

Ready to train your brain?

Download Sudoku - Brain Puzzles on iOS today and join thousands of happy solvers.

Download on the App Store