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2 questions
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7
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2x2 row and column equations
Rules: No paper or notes, but a calculator is accepted.
Post the exact time min wise of how long it took.
And obviously give the answer.
8
votes
2
answers
3k
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Can you solve the 7x7 (sudoku-ish) centered sums puzzle
I have come across this puzzle a few times in competitions and rally's, and it has troubled me because I cannot seem to find a good approach to solving it, either programmatically or numerically. And ...