Coding Games and Programming Challenges to Code Better
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Created by @StepBack13,validated by @DeanTheMachine,@FredericLocquet and @SackPhantom.
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In case anyone makes same mistake I did, please note that instruction
3. No rows (or columns) can be duplicates of other rows (or columns).
means
- No row can be duplicate of other rows, and
- No column can be duplicate of other columns.
However it does not mean
- No row can be duplicate of other columns
ie You can have an identical row and column.
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Also, note that you don’t need rule 3 (or rule 1) to solve this. Just rule 2 is enough (easy mode). 
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Does a reversed row/column count as duplicate?
No. Reversed would be fine. But keep in mind, this ‘Easy mode’ version doesn’t require checking for duplicates. You can solve it with only ‘Rule 2’.
At the same time, in the original puzzle this same rule is formulated clearly, but the second rule there is difficult for me to understand, but here it is clear.
It should have been written like this:
3. No rows (resp. columns) can be duplicates of other rows (resp. columns).