NOVA SUDOKU · English

Train logic, focus and working memory with modern Sudoku

Nova Sudoku combines calm puzzle solving with Classic, Killer, Diagonal, Hyper, Anti-Knight, Odd–Even, Thermo and Arrow modes.

BRAIN TRAINING

A short, structured brain workout

Practise logical reasoning and pattern recognition

Exercise working memory and sustained attention

Enjoy self-paced, active entertainment

Track streaks, time and achievements

8 MODES

Solve Classic Sudoku across six levels with notes, hints, statistics and daily challenges.

Combine standard Sudoku rules with cage sums and no repeated digits inside a cage.

Both main diagonals must also contain 1–9 exactly once.

Four extra 3×3 regions must each contain 1–9 exactly once.

Cells a chess knight's move apart cannot contain the same digit.

Circles require odd digits and squares require even digits.

Digits strictly increase from every thermometer bulb to its tip.

Digits along each arrow must add up to the digit in its circle.

Is Nova Sudoku free?

Yes. Core games, daily challenges, variants and printable puzzle packs can be used in the browser.

Does Sudoku increase IQ?

Sudoku can be used to practise logic, attention and working memory. The in-game Puzzle IQ score is entertainment, not a clinical IQ measurement.

Can I play with friends?

Yes. Create a public or private room, share its code and compare live progress with up to eight players.