Y-Wing is Next Step. What is a Y-Wing?

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Re: Y-Wing is Next Step. What is a Y-Wing?

Postby ronk » Wed May 31, 2006 1:54 am

angusj wrote:Are you saying that the XY-Wing is attributed to Gaby Vanhegan? If so, then I don't think that's correct. I believed it was first described here - http://www.setbb.com/phpbb/viewtopic.php?t=63&mforum=sudoku - by Mat Newman.

The first occurrence of "y-wing" I see in that thread is here where:
gaby wrote:Reading a little more about this, I got an implementation working for XY-wing (which I refer to as Y-wing, for simplicity, and I realise now is a short forcing chain).
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Re: Y-Wing is Next Step. What is a Y-Wing?

Postby angusj » Wed May 31, 2006 3:21 am

ronk wrote:The first occurrence of "y-wing" I see in that thread is ...

OK, so what you're saying is that gaby was the first person to call an XY-Wing a Y-Wing.
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Re: Y-Wing is Next Step. What is a Y-Wing?

Postby Cec » Wed May 31, 2006 10:03 am

turnthepage wrote:"I appreciate everyone's help! ... Thanks again to all of you:)

Thanks for the feedback turnthepage and hope your family are feeling better.
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