In multi-sudoku, several ordinary 9x9 sudoku puzzles are combined into one, connecting with each other by a different number of common cells. As a rule, it is impossible to solve each of the Sudokus separately.
Regular Sudokus are also published in the section
Left click/tap - iterate through numbers with preliminary focusing. Right click - reverse enumeration. You can make notes in each cell by inserting up to 20 numbers and other symbols. When clicked, the areas affected by the selected cell are highlighted in green. Red - cells with found inconsistencies in Sudoku conditions. The "/" (slash) key on the keyboard - puts possible candidates in an empty cell.
Left-click on the on-screen keyboard to place or delete candidates. Right - erases everything and puts the selected number.
