🧮 Latin Square
Fill the grid. Every row and column needs each symbol, exactly once.
Tips for solving
- Start with the row or column that already has the most locked symbols — it has the fewest options left.
- Track which of the 5 symbols is getting scarce across the whole grid, not just one row.
- If a cell has no valid symbol left, the mistake is upstream — erase a recent placement and try a different branch.