🐴 Anti-Knight Sudoku

📖 How to play Anti-Knight Sudoku

1. The sudoku rules apply: 1 through 9 with no repeats in each row, column, and 3x3 box.
2. In addition, two squares a chess knight's move apart (in an L shape) can't contain the same number.
3. Tap an empty square and choose the number. Each puzzle has a unique solution.

💡 Tip: every time you place a number, think about the (up to 8) squares a knight would reach from there: none of them can repeat that number.