Play Anti-Knight Sudoku Online Free

Play Anti-Knight Sudoku online for free. Classic rules plus no two cells a chess knight's move apart can contain the same digit.

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

How to Play Anti-Knight Sudoku

  1. Standard Sudoku rules apply.
  2. Cells connected by a chess knight's move (L-shape) cannot contain the same digit.
  3. A knight moves 2 squares in one direction and 1 square perpendicular — just like in chess.
💡 Pro Tip
The knight constraint is strongest near the center of the grid where each cell has up to 8 knight peers.

Frequently Asked Questions

How many knight peers does a typical cell have?

Up to 8 — every cell reachable by an L-shaped knight's move (2-and-1 in any direction). Cells near the corners or edges have fewer.

Can the same digit appear in two cells a knight's move apart?

No — that's the entire Anti-Knight constraint, on top of standard row/column/box rules.

Try More Puzzle Modes

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