Achievements have been implemented for every variant, mode and difficulty! Now you can feel the satisfaction of completing the levels with a tiered list of achievements, only in challenge mode. Check them out on the main page!

(They should be retroactively added to each player, so don't worry about missing out if you finished a lot of levels already)

Sadly, I am limited in the number of points I can allocate for achievements (minimum 5 per achievement, maximum 1000 in total), so, in the future, there may be a limited number of variants that do get achievements. There's nothing I can do about this.

In addition to achievements, I was hard at work to implement new variants. My plan is for this game to be the central hub of Sudoku, with every variant possible to be available. I implemented Sudoku X last time as a test and as a foundation for things to come. Today I announce several new variants:

As another small update, I added navigation through the grid using the arrow keys (Up, Down, Left and Right). To clear a cell , you can use Backspace, 0 or input again the digit in that cell (only for cells changed by the user).