Play Anti-King Sudoku Online Free

Play Anti-King Sudoku online for free. Classic rules plus no two diagonally adjacent cells can contain the same digit.

▶ Play Anti-King Sudoku — Free
🟢 Easy 🟡 Medium 🟠 Hard 🔴 Expert

How to Play Anti-King Sudoku

  1. Standard Sudoku rules apply.
  2. Cells touching diagonally (king's move in chess) cannot contain the same digit.
  3. This extends the 'no repeats' rule to all 8 surrounding cells.
💡 Pro Tip
Every cell now has up to 8 peers beyond the standard row/column/box — think of it as each cell's 'neighborhood' being expanded.

Frequently Asked Questions

How is Anti-King different from Anti-Knight Sudoku?

Anti-King forbids the same digit in any of the 8 directly touching cells (king's move). Anti-Knight forbids it in cells a knight's L-move away.

Does the Anti-King rule apply to non-adjacent cells?

No — only to cells that physically touch (orthogonally or diagonally). Further-apart cells follow normal Sudoku rules.

Try More Puzzle Modes

🧩Anti-Knight Sudoku 🧩Miracle Sudoku 🧩Classic Sudoku
▶ Play Anti-King Sudoku