Fill in the grid with digits 1 to 4 such that every row and column contains each number exactly once. Numbers outside the grid indicate the sums of all numbers appearing in the corresponding row (left to right) or column (top to bottom). These numbers are separated by at least one empty cell.
EXAMPLE:
UNIQUE SOLUTION:
2 comments:
In this case it would be better to use "digit" instead of "number": "Fill in the grid with digits 1 to 4 ...".
Yes, you are right :-)
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