Sudoku Master: Killer Daily

Kristopher Studios

Contains adsIn-app purchases

About this game

Looking for killer sudoku, daily sudoku, or sudoku you can play offline? Sudoku Master brings classic sudoku, killer sudoku, diagonal sudoku, irregular sudoku, and more sudoku variants into one logic puzzle app — on the commute, before bed, or on a flight, open a number puzzle without installing a separate app for each style.

Sudoku Master is built for players who want sudoku variety: when classic 9×9 feels familiar, switch to killer sudoku and cage sums; add diagonal X-sudoku or windoku for new constraints; try comparison sudoku, odd-even sudoku, anti-knight sudoku, or anti-king sudoku for a different kind of brain training. A fresh daily sudoku challenge every day helps you build a streak, track progress, and keep your logic sharp.

Sudoku variants included

Classic sudoku — traditional 9×9 number logic puzzle; 4×4, 6×6, and 9×9 grids

Killer sudoku — solve with cage sum clues, a favorite killer sudoku experience

Diagonal sudoku (X-sudoku) — both main diagonals must contain unique digits

Windoku — four extra 3×3 window regions add new rules

Comparison sudoku — greater-than and less-than hints between adjacent cells

Odd-even sudoku — cells restricted to odd or even digits

Irregular sudoku (jigsaw sudoku) — regions break out of standard square boxes

Anti-knight sudoku — cells a chess knight's move apart cannot match

Anti-king sudoku — adjacent cells cannot contain the same number

Difficulty and grids

Four levels from easy to expert across every variant, with 4×4, 6×6, and 9×9 grids — from first-time sudoku players to expert solvers hunting a tough killer sudoku grid.

Helpful tools

Smart hints, pencil-mark notes, real-time error checking, auto-save, undo and redo; stats, best times, and achievements for each sudoku variant and difficulty.

Comfortable design

Light, soft, and dark themes; clean modern interface; smooth animations with optional sound and haptic feedback.

Whether you are new to sudoku, searching for a killer sudoku app, or building a daily logic puzzle habit, Sudoku Master keeps classic sudoku, killer sudoku, and more sudoku variants ready — including full offline sudoku play.

What’s new

• Easy difficulty is now free for all Sudoku variants
• Sign in with Google to sync Premium benefits across iOS and Android devices
• Improved login, trial, and purchase experience
• Bug fixes and performance improvements for better stability