Let the adults play sudoku with numbers, and for the kids we specially prepared a simplified puzzle called Seashells Sudoku. Its rules are similar to sudoku, but instead of boring numbers are multi-colored shells. Some of them are placed in cells on the field, and the rest you must add so that there is no free space. Remember that in the rows and columns should not be two identical shells. To facilitate the solution of the problem, you simply cannot take the wrong step. However, you still have to think.