Sudoka

Sudoka is not just another Sudoku app – it’s a complete platform for Sudoku enthusiasts who love logic puzzles with extra layers of challenge. Whether you are a beginner or a hardcore solver, Sudoka offers endless possibilities through a growing collection of rule variations.

Currently supported puzzle mechanics include:

German Whisper – adjacent cells differ by at least 5

Dutch Whisper – adjacent cells differ by 4 or 5

Renban – continuous digits, in any order

Parity – even/odd constraints

Entropic – low (1‑3), mid (4‑6), high (7‑9) groups

Palindromes – palindrome lines

Sequence – consecutive digits along a path

Modular 3 – same modulo class

Sum Region – region‑based sum constraints

Kropki – black or white dot (double or consecutive)

XV – adjacent cells sum to 5 or 10

Arrow – sum of cells along arrow equals circled cell

Thermometer – digits increase along the bulb

Diagonal – both main diagonals must contain 1‑9 once

Killer Cage – non‑repeating digits with given cage sums

Puzzles can combine multiple rules in one grid, creating unique and highly replayable logic challenges. The number of available puzzles grows over time, and new rule variations are added regularly. Sudoka is designed to evolve with its community – never run out of fresh puzzles to solve.