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Supporting dynamic theming and 5 own themes. Also, pure black in dark theme is available
9x9 and 6x6
4 difficulties
2 input methods. Digit first and cell first
2 type of mistakes checking. First is detecting game rules violations and the second is checking with final solution. Can be turned off completely
Basic things like timer, notes (pencil marks), undo, game pauses, hints (just revealing the number, better than nothing), give up (show solution), saves
Notes management. You can compute notes (candidates), clear all and toggle visibility. You can access all of these features by long pressing the notes button in the game
Games history. You can continue any uncompleted game whenever you want
Statistics and records. Best and average times, win streak, started/completed games count and win rate
Mistakes limit. 3 mistakes = game over, for hardcore players. Turned off by default
Auto erase notes. Can be turned off
Same numbers highlight. Select a number and all cells with the same number will be highlighted. Can be turned off
Remaining uses count. The number of remaining uses of a digit will be shown on the keyboard. If it reaches zero, the button will disappear. Can be turned off
Keep screen on. Turned off by default
Tutorials for game techniques like naked pairs etc. (in progress)