INTRODUCING 5 - days-a-week problem solving session for Math Olympiad and ISI Entrance. Learn More

Here is a variant of clueless Sudoku that I was trying for fun. In clueless Sudoku

- A n*n board is given
- No numbers are written on the board
- The board is divided in some blocks (typically in some pattern). Sum of numbers in each block must be constant.
- Numbers 1 to n must appear in each row and each column with out repetition.

Consider the following example:

The red bordered boxes should have the same sum of numbers as the remaining boxes. No number should repeat in a row or a column.

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