A Sudoku With Only 8 Given Digits?

Описание: ** TODAY'S PUZZLE **
Titles like these have become synonymous with the Dutch sudoku wizard Aad van de Wetering - and this one is no different. A classic "Aad" puzzle - with an original ruleset - and some beautiful logic to boot!

Play the puzzle at the links below:

https://sudokupad.app/i7jrq9g9oz

Rules:
Normal sudoku rules apply. (ie Place the digits 1-9, once each, in every row, column and 3x3 box.) Cells separated by a single knight's move (in chess) cannot contain the same digit. In a 3x3 box every horizontal threesome contains one digit from {1,2,3}, one from {4,5,6} and one from {7,8,9}. A positive diagonal is any diagonal going from South-West to North-East. When normal sudoku rules allow neighbouring digits on a positive diagonal to be equal they MUST be equal. eg r2c4, r3c3 and r4c2 must contain the same digit; r6c2 and r7c1 must contain the same digit; etc.

Today's intro music is Peter Gabriel's Solsbury Hill.

** MONDAY'S BLUE PRINCE STREAM **
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** BONUS SOLVE ON PATREON **
Simon couldn't resist the Scrabble Sudoku mentioned during last week's videos. His solve of LMDemasi's puzzle is available on Patreon now!

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Android:
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▶ Contents Of This Video ◀

0:00 Intro music and today's puzzle
1:00 9.5million views
2:58 ‪@standupmaths‬ Matt Parker
4:13 Patreon videos
4.31 Happy Birthdays
6:19 Rules
9:50 Start of Solve: Let's Get Cracking

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Simon Anthony & Mark Goodliffe
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