Sudoka: Numbers 1–9 and Field Logic
In Sudoka, you fill in a field with numbers 1–9. This is one of the logic games where one mistake prevents you from completing the board. There are progressive chapters and daily tasks.
How to fill out a field without repetition?
First look for cells with only one option. Then check the row, column and 3x3 block to avoid repeating numbers. When there are several options, marks keep candidates; the same move calculation is needed in Sudoku Classic: you also check the numbers along the same three lines.
What do chapters and daily quests provide?
Progressive chapters lead you through new fields in order. The rules remain the same, only the grid changes. Daily challenges give you a different puzzle for each day.
How to manage cells and notes?
On a PC, you click on the cell, enter the numbers 1–9 and move the selection with the arrows. N enables notes, Backspace or Delete erases a number, Ctrl + Z undoes a move, Space pauses. On mobile, you tap a cell, enter a number on the keyboard, and use icons for notes, erasing, and undoing.