4 ms·
That's the point. The rules don't explicitly say that columns need to be unique (only rows). Within the stated rules there are (as best I can see) 2 valid sol
by timv 12y ago
That's the point.
The rules don't explicitly say that columns need to be unique (only rows).
Within the stated rules there are (as best I can see) 2 valid solutions to that puzzle. It is the introduction of the unstated unique column rule that resolves it.
- judk 12y agoThe author is not a native English speaker, but it seems obvious that the row rule should apply to columns.