Sudoku - Brain
Puzzles
Sudoku - Brain
Puzzles
Experience the ultimate puzzle collection. Master Fog of War, Classic, Killer, Sandwich, Diagonal, Jigsaw, Kropki, Thermo, Arrow, Little Killer, Mega 16x16, and Mini 6x6 — 18 variants in all. Sudoku - Brain Puzzles brings color, life, and tactile joy to the game.
We took the classic game and polished it until it shines. No clutter, just pure logic bliss.
Endless puzzles with unique solutions. Choose from Easy, Medium, or Hard and enjoy a clean, distraction-free design.
Play Classic, Killer, Sandwich, Mini Sandwich, Diagonal, Jigsaw, Mini Jigsaw, Kropki, Mini Kropki, Thermo, Mini Thermo, Arrow, Mini Arrow, Little Killer, Mega 16x16, Mini 6x6, and the new Fog of War & Mini Fog of War Sudoku.
A fresh puzzle every midnight. Build your winning streak and check the calendar to replay past days.
Don't just get the answer—learn WHY. Our hints teach you the logic behind every move, making you a master.
Make it yours with 4 unique themes (Geometry, Ocean, Fruity) and full Light/Dark mode support.
Play anywhere. Your progress syncs across all devices via iCloud, complete with Game Center leaderboards.
Hear your logic. Every digit plays a musical note, each completed box rings out a chord, and solving ends on a satisfying cadence. Choose your key and instrument — Off, On, or Headphones Only. A calm, accessibility-friendly way to play, on all 18 variants.
Master 10 exciting Sudoku variants. Pick one and learn the rules! Or jump straight in and play Sudoku free in your browser.
Place numbers 1-9 in every empty cell to complete the puzzle.
Every row must contain numbers 1-9 exactly once. No repeats!
Every column must contain numbers 1-9 exactly once. No repeats!
Every 3×3 box must contain numbers 1-9 exactly once. No repeats!
Each row, column, and 3×3 box must contain 1-9 exactly once.
Dotted lines show cages. Small numbers are target sums.
Numbers in each cage must add up to the target sum.
Numbers cannot repeat within a cage, even if the sum is correct.
Each row, column, and box must contain all symbols exactly once.
A 16×16 grid using numbers 1-9 and letters A-G (10-16).
Uses numbers 1-9 and letters A-G (representing 10-16).
Each row, column, and 4×4 box must contain all 16 symbols exactly once.
Each row, column, and 3×3 box must contain 1-9 exactly once.
Clues surround the grid showing sums for each row and column.
Clues show the sum of numbers between 1 and 9 in each row/column.
The clue equals the sum of all digits between 1 and 9 in that row.
Each row, column, and 3×3 box must contain 1-9 exactly once.
A standard 9×9 grid with two highlighted diagonals.
The diagonal from top-left to bottom-right must also contain 1-9.
The diagonal from top-right to bottom-left must also contain 1-9.
Each row and column must contain 1-9 exactly once, just like classic Sudoku.
Coloured regions show the jigsaw shapes. Each colour is one region that must hold every digit once.
Because the regions are irregular, box-based scanning changes — follow the region outlines instead of straight 3×3 blocks.
Mini Jigsaw plays the same way on a 6×6 grid with six irregular regions using digits 1-6 — a gentle way to learn.
Each row, column, and 3×3 box must contain 1-9 exactly once.
Dots sit on the borders between cells. White = consecutive, black = double.
A black dot means one digit is exactly double the other (a 2:1 ratio), such as 3 and 6.
If there is no dot between two cells, they are neither consecutive nor double — a powerful deduction. Mini Kropki brings the same dots to a 6×6 grid.
Each row, column, and 3×3 box must contain 1-9 exactly once.
Digits must strictly increase from the round bulb to the tip — no repeats along a thermometer.
The bulb always holds the lowest digit; each cell's position limits its value. Mini Thermo brings the same rule to a 6×6 grid.
Each row, column, and 3×3 box must contain 1-9 exactly once.
The digits along an arrow's path add up to the digit in its circled cell.
Because it holds the sum, the circle is the biggest digit on its arrow — and digits may repeat on the path. Mini Arrow brings the same rule to a 6×6 grid.
Fog covers the grid — only a seed cell's box, row, and column are visible at the start.
Every correct digit lifts the fog around it, revealing new cells and clues. Wrong digits reveal nothing.
Each game hides 2–4 extra constraints — killer cages, kropki dots, thermometers, or arrows — revealed as you solve. Mini Fog of War (6×6) is free.