This Friendly puzzle is a Prime example of Unfriendly.

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Australia BremSter Puzzles
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Published on ● Video Link: https://www.youtube.com/watch?v=s4YuRHsoEJI


Duration: 46:52
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My solve of "Blocks with Benefits" by XeonRisq, a sudoku using a number of unusual constraints.
Solve in SudokuPad: https://tinyurl.com/cpz9nkx3

You can also find this puzzle on Logic Masters Germany:
https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=0008QQ

Rules:
- Normal Sudoku rules apply.
- Cages are to contain one Prime digit (2357) and one Composite (non-Prime) digit (4689). 1 is neither Prime nor Composite and will be left out of all cages.
- All cages will contain either all friendly cells or no friendly cells. A friendly cell is a cell that contains a digit that matches it's row, column, or box. (For example, r5c9 would contain either 5 (row), 9 (column) or 6 (box) if the cell is a friendly cell).
- The number in the circle between the two cells in a cage will be the difference of the two digits in the cage, if given.

You can find other puzzles by XeonRisq on his Logic Masters Germany profile page:
https://logic-masters.de/Raetselportal/Benutzer/eingestellt.php?name=XeonRisq


* March of the Quads *
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Welcome to March of the Quads. You can download the Puzzle Pack for free from the following locations.
https://www.patreon.com/posts/63558899/
Alternate Download Link: https://tinyurl.com/marchofthequads

If you wish to submit solution codes by the 31st of March, send in the titles of the puzzle and the complete Row 3 from the puzzle left to right to bremster@elindal.net
There is no pressure to do this by the end of March, as this will continue into April and all entries from March will get a second chance to win in April along with all the submissions in April.
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Please come join us in the Sudoku Solvers Discord Community: https://discord.gg/AEhpTG4z45

You can come to my Patreon page which I am using mostly as a public blog, and you may support if you wish to.
https://www.patreon.com/bremster

Find the details of all the puzzles covered on my channel on the following tracking sheet: https://tinyurl.com/BremSterVidsv1


If you would like to reach out to me you can.
I am BremSter on the CtC discord, or you can email bremster@elindal.net

You can find many of my puzzles on my Logic Master's Germany profile page.
https://logic-masters.de/Raetselportal/Benutzer/eingestellt.php?name=Bremster



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Tags:
sudoku
puzzles