Qoki — Play Sudoku and variants online - Challenge your mind!
Sudoku · Killer Sudoku · Calcudoku · Binary Sudoku
Sudoku
Classic 9x9 logic puzzle. Place digits 1-9 so every row, column, and 3x3 box contains each number exactly once.
Killer Sudoku
Combine Sudoku logic with cage sums. Fill the grid so rows, columns, and boxes are valid while each cage reaches its target total.
Calcudoku
Math meets logic. Fill the grid with numbers that satisfy row/column uniqueness and arithmetic clues inside outlined cages.
Binary Sudoku
Use only 0 and 1. Keep each row and column balanced, avoid triples, and ensure every row and column pattern is unique.
Why Play on Qoki?
Lightning Fast
Optimized JavaScript engine for instant gameplay
Mobile Friendly
Play seamlessly on any device
Smart Hints
Get intelligent hints when you're stuck
Play Qoki on mobile
Take your favorite Sudoku and logic puzzles everywhere. Smooth, fast and made for touch — even offline.
