🐴 Anti-Knight Sudoku · Knight Move Constraint
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⭐ Click a cell · Knight-move cells will highlight | Center 5's knight steps cannot contain 5
📖 Anti-Knight Sudoku · Rules & Tips
♞ Core Rules
✔️ Each row contains digits 1-9 without repetition
✔️ Each column contains digits 1-9 without repetition
✔️ Each 3x3 box contains digits 1-9 without repetition
✔️
Knight move constraint
: No two cells a knight's move apart may contain the same digit
🐎 Knight move example (from center 5, highlighted cells cannot have 5)
5
✨ The center 5's knight steps are highlighted — those cells cannot contain 5
🎮 Controls & Tips
🖱️ Click a cell to select it — all knight-move cells will be highlighted in light blue
🔢 Use on-screen numpad or keyboard 1~9 to enter digits
🗑️ Press Delete / Backspace or click ⌫ to erase
⏱️ Timer starts automatically; click "Score" to get accuracy rating
↩️ Undo any number of steps; error count updates in real time
💡 Tip: Focus on the center 5 and its knight-reach cells, then apply row/column elimination