Fill the grid · grey mirror lines read the same both ways · 27 unique puzzles
Tier: —Time 0:00Lvl —
Palindrome Sudoku
Standard Sudoku — but grey mirror lines read the same both ways
Choose a Level
Standard Sudoku
Fill every row, every column, and every box so each digit appears exactly once.
Mirror Lines
Grey palindrome lines connect cells across the grid. The digits along each line must read the same from either end — a palindrome. The first cell matches the last, the second matches the second-last, and so on.
The highlighted cells form a mirror line: 3 · 7 · 5 · 7 · 3 reads the same both ways.
Tools & Stars
Use Notes for candidates, Hint when stuck, Undo any move. Solve fast with no mistakes and no hints to earn 3 stars.