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Nope, there's just one: look at column 1 and 4, so far they are the same.
by sjoerd_visscher 12y ago
Nope, there's just one: look at column 1 and 4, so far they are the same.
- timv 12y agoThat'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.