Classical game kakuro with the minimum registration
Fill cages in figures from 1 to 9 so that their sums in lines and columns corresponded specified on fields. On a choice of 6 fields from 6х8 to 12х12 and 3 levels of complexity
Arithmetic puzzle in which it is necessary to fill a field in figures from 1 to 9. The sum of figures of a column and a line are specified on fields, and identical figures are replaced by identical letters
Sudoku on five fields united in the form of letter Х.50 of tasks at three levels of complexity