Piet Souris wrote:
The experience you will gain is very useful. Think about how you would do
brute force, given the empty cells. If you have an empty cell, what digits
are still possible? How would you pick one of these digits, and how do you
proceed? And what if you find that no digits are possible? Then what?
Well, it'll keep you busy for at least today!
All of the world's problems can be solved in a garden - Geoff Lawton. Tiny ad:
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