How could this rectangle be correct?

Post the puzzle or solving technique that's causing you trouble and someone will help

How could this rectangle be correct?

Postby Hobbelobban » Fri Jun 15, 2018 2:35 pm

I solved an "annoying" puzzle today and am surprised that the rectangle marked in red is there.
This sudoku puzzle has two solutions which should not be possible. Or?
Where am I thinking wrong?
/Annette
Attachments
20180615_150357-270x480res.jpg
Sudoku with two solutions?
20180615_150357-270x480res.jpg (53.88 KiB) Viewed 88 times
Hobbelobban
 
Posts: 2
Joined: 15 June 2018

Re: How could this rectangle be correct?

Postby JasonLion-Admin » Sat Jun 16, 2018 2:28 pm

R34C12 meets most of the criteri for being a deadly rectangle, however R4C12 are both clues, which prevents this from forming a deadly pattern. As you are not allowed to change clues, the digits can not be swapped.
User avatar
JasonLion-Admin
Site Admin
Site Admin
 
Posts: 78
Joined: 17 April 2010
Location: Silver Spring, MD, USA

Re: How could this rectangle be correct?

Postby Hobbelobban » Sun Jun 17, 2018 7:45 am

Of course!
Thank you!!!
I realize that now since you pointed it out.
I am fairly new to sudoku and love your app where I learn so much. And I am even happier now when I found this forum.
Once again Thank you so much!
Hobbelobban
 
Posts: 2
Joined: 15 June 2018


Return to Help with puzzles and solving techniques