Re^2: Pairing Riddle (OT)

Hi LanX, there is another possibility not mentioned in your spoiler:

To be the niece and the aunt of "Uncle" at the same time, the woman needs to be child of his brother and his grandfather.

=> the mother of the woman has married both of them (not at the same time, of course!)
=> in order to prevent any bloodline-issues, the biological father of the woman is someone completely different and the mother of the woman had no children neither with the brother nor with the grandfather

Or even easier:

seems to be much easier than originally thought ... but does not involve any graph-theory ...

So long, Rata

Comment on Re^2: Pairing Riddle (OT)

Replies are listed 'Best First'.
Re^3: Pairing Riddle (OT) by LanX (Saint) on Apr 27, 2026 at 10:08 UTC
Thanks, Rata. But I think you missed the requirement in the OP that uncle/aunt by marriage doesn't count. > > > "Direct" means blood related, i.e sibling of one parent, not "uncle by marriage". In hindsight it becomes clearer why breeding dogs would be a better setting for this puzzle. Dogs don't know marriage, divorce and soap operas° ... ;) And many breeders rely on incest, restricting them to uncle/aunt relationships would be a "moral" advantage. Update The trivial solution (of many) if "by marriage" was allowed ... <Reveal this spoiler or all spoilers in this node or all in this thread> Cheers Rolf _{(addicted to the Perl Programming Language :) see Wikisyntax for the Monastery} °) <Reveal this spoiler>	[reply]

Replies are listed 'Best First'.

Re^3: Pairing Riddle (OT)
by LanX (Saint) on Apr 27, 2026 at 10:08 UTC

> > > "Direct" means blood related, i.e sibling of one parent, not "uncle by marriage".

In hindsight it becomes clearer why breeding dogs would be a better setting for this puzzle.

Dogs don't know marriage, divorce and soap operas° ... ;)

And many breeders rely on incest, restricting them to uncle/aunt relationships would be a "moral" advantage.

The trivial solution (of many) if "by marriage" was allowed ...

Cheers Rolf
_{(addicted to the Perl Programming Language :)

see Wikisyntax for the Monastery}

°)