♚ Anti-King Sudoku

Solve the 9×9 Sudoku puzzle with an extra twist—identical digits cannot be placed a king's move apart, just like in chess.

Game Settings
Difficulty
Game Info
Time: 00:00
Difficulty: Medium
Mistakes: 0
How to Play

  • Fill the grid so each row, column, and 3×3 box contains digits 1-9 exactly once
  • Anti-King Rule: No identical digits can be placed a king's move apart (including diagonally adjacent cells)
  • Use logic - guessing won't help!

  • Diagonal Scanning: Always check diagonally adjacent cells for conflicts
  • Edge Advantage: Numbers on edges have fewer diagonal neighbors
  • Pencil Marks: Use notes to track possible numbers
  • King-Zone First: Solve areas with many diagonal constraints first