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Rules of Psycho Killer puzzle


This puzzle type appeared in OAPC Contest. I have created some puzzles of this type which I will be posting soon. Before I post the puzzles created by me, here is the example taken from OAPC Contest, to understand this puzzle type better.
Rules of Psycho Killer puzzle
Fill the grid with digits 1-n, where n is size of the grid so that each digit appears exactly once in every row and column. The puzzle is a Killer Sudoku puzzle with missing regions. Determine the regions and solve the puzzle. Each region contains its sum in the cell which is the first left cell of the topmost cells. The is no region that contains only one digit. No digit can be repeated within a sum.
Rules of  Psycho Killer puzzle
Rules of  Psycho Killer puzzle

Consecutive Sudoku (Fun With Sudoku #100)
Consecutive Sudoku (Fun With Sudoku #100)


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