Description

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".
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 12 exactly once.

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