Binary Sudoku 11
(Published on 26. April 2020, 23:39 by stephane.bura)
The last puzzle in this series for a while and the purest iteration on the concept.
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General Rules: Place a digit from 1 to 9 into each cell of the grid so that every row, column and outlined 3x3 region contains each digit exactly once. Binary Numbers: Cells linked by a straight blue line form a binary number. Each digit contributes to the binary number according to its parity: if the digit is even, it represents a 0 bit; if it’s odd, a 1 bit. Binary numbers are read from left to right or from top to bottom. So 8-5-4-7 is even-odd-even-odd or 0101 for a value of 5. It is not possible to have a binary number that is only made of even digits and would add up to 0. Note that the binary numbers have different lengths. Binary Sums: Each number on the left or on the top of the grid is the sum of the values of the binary numbers present in this row or this column. Sums within the Binary Numbers: In each of the binary numbers, it is possible to choose one to six digits that add up to the value of the number. For instance, on the right are three valid groups of cells for the 12 binary number. Additionally, if the binary number has a value between 1 and 9, it must contain the corresponding digit. |
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Solution code: Row 1, column 9
Comments
on 28. October 2022, 20:06 by stephane.bura
@rowlinson Thank you :)
Glad you appreciated it.
on 28. October 2022, 19:19 by rowlinson
Although this puzzle is 4/5, I myself managed to solve it in just (haha, just) 1 hour and 11 minutes because it flows so nicely and doesn't require any extraordinary deductions. It is just pure logic. It is a fantastic sudoku. Looking forward to your future puzzles!
on 28. October 2022, 08:39 by stephane.bura
@ndsurgenor Thanks for the rating.
What a blast from the past :)
on 27. October 2022, 22:29 by ndsurgenor
Really enjoyed this, especially that there were two puzzles in one so to speak. Glad that this finally has an official rating more than 2 years later :)
on 28. February 2021, 18:55 by SudokuExplorer
Here's a f-puzzles link: https://f-puzzles.com/?id=yaoc2u33
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Beautiful!
Thanks, for both of them :)
