Richard Edelen

Most Difficult Maths Puzzle Richard Edelen

In Killer Sudoku, sub-regions have specified sums, and no number can be repeated within a sub-region. The goal is to fill in the empty cells, one number in each, so that each column, row, and region contains the numbers 1 through 8 exactly once.
In Killer Sudoku, sub-regions have specified sums, and no number can be repeated within a region. This variant also called "Sums Sudoku", "Sums Number Place", "Samunamupure", "Kikagaku Nampure".