Smart Sudoku

Smart Sudoku starts on a board of nine cells. You place digits by reading clues rather than by guessing: a green clue means the digit stands only in the marked cells, a red one means it cannot stand there. A move that breaks a clue simply does not happen, so there are no lives and no penalties.

Once the idea clicks, three classic modes open up on a 9×9 board: classic sudoku, jigsaw sudoku with irregular regions and killer sudoku with caged sums.

There are 2750 checked puzzles inside, five difficulty levels in every mode. When the catalogue runs out, the game keeps building new puzzles on its own, and each of them has exactly one solution.

Hints explain a move in three steps: where to look, why it follows and the answer itself. There is a daily goal, 32 achievements, six leaderboards and 16 themes. Progress saves itself and follows you between devices.

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