What is Anti-King Sudoku?

Anti-King Sudoku is a Sudoku variant that adds one rule on top of normal Sudoku: no two cells a king's move apart (the 8 surrounding cells, including diagonals) may contain the same digit. It is also called King Sudoku or Touchless Sudoku (king).

How do I play Anti-King Sudoku?

Fill the grid so every row, column and box contains each digit exactly once. Additionally, a digit can never repeat in any of the 8 king-neighbouring cells (horizontal, vertical and diagonal). Tap a cell, then tap a digit to place it. Selecting a cell glows its king-neighbours so you can see the constraint.

Is Anti-King Sudoku free?

Yes. Anti-King Sudoku on GameZipper is 100% free to play in your browser with 27 puzzles across Beginner to Master tiers. No download or sign-up required.

How many levels does Anti-King Sudoku have?

There are 27 hand-crafted levels across six tiers: Beginner, Easy and Medium use a 6x6 grid, while Hard, Expert and Master use the classic 9x9 grid. Each puzzle has a unique solution verified by an independent solver.

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Anti-King Sudoku

Fill the grid · no repeats a king's move apart · 27 unique puzzles

Selected cell King moves (no repeat)

Tier: —Time 0:00Lvl —

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Anti-King Sudoku

Standard Sudoku — but no two king-adjacent cells may repeat

Anti-King Sudoku

Anti-King Sudoku

Standard Sudoku

The King Rule

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