43 days ago

Has a Sudoku with 16 clues finally been discovered? How good are you at Sudoku?

Alan from Titirangi

It is supposed to be impossible for a "Sudoku" with 16 clues to have a unique solution. Try to solve the Sudoku below before you look here:
aaamazingphoenix.wordpress.com...

The “Sudoku” below has 16 clues and two solutions. However the two solutions appear to only swap around the 8s and 9s. Since there are no 8s or 9s in the original puzzle does this mean the solution is unique?

It is believed that there is no Sudoku with 16 clues i.e. with a unique solution. It was mathematically proven in 2012 by Gary McGuire and his team that 17 is the minimum number of clues possible for a valid Sudoku puzzle to have a unique solution; puzzles with 16 or fewer clues cannot have only one solution.

What about this puzzle?

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More messages from your neighbours
J
40 minutes ago

Elvis in the Park

Jackie from Titirangi

Elvis in the Park. 11th January from 11am till 5pm. Cranwell Park in Henderson. Free Family day out. Check out the Classic Cars and Hot Rods. Bring your chairs, sun tan lotion, water, and your smile. We are celebrating Elvis' 91st Birthday. Any questions ph Jackie 0274901126. Park at Tui Glen as easy walk over bridge to Cranwell Park

7 days ago

Poll: Is it ok to regift something that you have been given?

The Team from Neighbourly.co.nz

🎁 Holiday Gift Chat!

Do you ever regift?
What’s your take on asking for a receipt if a gift doesn’t fit?

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Is it ok to regift something that you have been given?
  • 78.9% Yes! It's better to regift what I don't need
    78.9% Complete
  • 21.1% No. It's the thought and effort that matters
    21.1% Complete
1189 votes
5 days ago

Today’s Mind-Bender is the Last of the Year! Can You Guess It Before Everyone Else? 🌟🎁🌲

The Riddler from The Neighbourly Riddler

I dance in the sky with green and gold, a spectacle few are lucky to behold; I’m best seen in the south, a celestial sight—what am I, lighting up the New Zealand night?

Do you think you know the answer? Simply 'Like' this post and we'll post the answer in the comments below at 2pm on the day!

Want to stop seeing these in your newsfeed? No worries! Simply head here and click once on the Following button.

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