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Diagonal Vision — LMI March Sudoku Test — 10th-12th March60 posts • Page 3 of 3 • 1 2 3
Should the diagonals be marked in the "Anti-Diagonal Sudoku"?
Will it be better if the diagonals be marked in the "Anti-Diagonal Sudoku"?
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Yes, it will be much better8 Votes - [22.86%]
No / does not matter27 Votes - [77.14%]
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@ 2012-03-16 9:11 PM (#6940 - in reply to #6939) (#6940) Top

Fred76




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Fred76 posted @ 2012-03-16 9:11 PM

Finally (then I stop and let you concentrate on the tapa contest ), I want to speak about the diagonal twin sudoku.

There is (at least) 2 openings for these grids. You can begin with the corners. With grid A you can place 8 in R1C9, 4 in R9C9, and Grid B let you know the two other corners.

But there is another opening, which I find more elegant: You can start with the center of the grids: box 5. Grid A let you know that digits in white cells are 3,5,7 and 8. Knowing that individually they can't be placed in the same cell let you place the 5 in R5C6, the 3 in R5C4, then the 8 in R6C5 and 7 in R4C5 in grid B.
Then in both grids, 6 can be placed in R5C5, you have a pair 14 in cells R6C46, then 2 in R4C4 and 9 in R4C6.

Of course, you'll need still lot of work to solve these grids, but box 5 is almost filled



(diagotwin2.png)



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Diagonal Vision — LMI March Sudoku Test — 10th-12th March60 posts • Page 3 of 3 • 1 2 3
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