The New Sudoku Players' Forum

[urhegyi]

And the second one:

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#1//B4,JS
1..2.5..8...........3...1..8.......7.52...81.4.......2..4...6...........3..7.1..6
111222233151111223555122233545666337545666737544666737448889777488999979448888999


[Hajime]

Hi, Can you provide the 81-char strings, please.
But indeed. It should have found this xyz-wing.
I will look into this after my holiday.... No laptop present

[Hajime]

Uninitialized variable
Also not happy with the elegance of the XYZ-routine.
Will take some time...

[Hajime]

Version 10 Oct 2024, 2024-10

The October 2024 version of SiSeSuSo.exe is now available at
https://sites.google.com/site/sisesuso.

• (..W)XYZ method had a bug concerning un-initialized variable; fixed.

Thanks urhegyi for finding bugs.
Busy with pimping xyz-code and implementing grouped aic chains.

[Hajime]

In Visual Studio 2019 (VB) I ran into this glitch:

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For i = 1 to 2
   Dim w as integer
   For j = 3 to 4
      w = w + j
   Next
   msgbox "w=" & w
Next

First time it answered w=7
Second time it answered w=14
The "Dim w" statement did not initialized w to zero the second time.

Is this "fascinating"?
I add "w = 0" just after the "Dim w" statement for expected results...

[dobrichev]

Is this "fascinating"?

Yes, it's really fun.
It is also reproduced in Do and Try blocks, without the inner loop.
A compilation error occurs in C#.
I imagine they debated whether to fix the problem or document it. The final decision was to document it, but this part of the documentation did not pass the censorship.

BTW Dim w as new integer also works.

The lesson for me is to continue to stay away from these technologies.

[Hajime]

Version 03 Jan 2025, 2025-01

The January 2025 version of SiSeSuSo.exe is now available at
http://sites.google.com/site/sisesuso

• Added Remote-Pointing method, for rows/cols over 2 overlapping Sudoku's in one puzzle

For an example see: http://forum.enjoysudoku.com/twin-4-easy-or-not-t45320.html