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Christmas Sudoku

Posted: Fri Dec 24, 2010 9:02 am
by Jan Lichtenbelt
Hello All,

Just for Christmas a Sudoku in Flowcode. It is not an easy one. So if your are lonely, take your time to solve it. If you have friends and family at home, take care of them.

Mery Christmas

Jan Lichtenbelt

1) Only Flowcode simulation has been tested
2) Suggestion to solve can be found at:
3) If you solved it without the help of a computer, send me the solution before 1-1-2011 (see flowcode for details)
4) The winner will get fame for ever!!!

Re: Christmas Sudoku

Posted: Fri Dec 24, 2010 9:40 am
by Benj
Hello Jan,

Thats brilliant thanks I shall be giving that one a go later :D

Re: Christmas Sudoku

Posted: Sat Dec 25, 2010 6:00 am
by trisb
Nice Job. Jan

Thanks.. this will keep me entertained for a while.. or at least give me a break creating other software..


Re: Christmas Sudoku

Posted: Mon Dec 27, 2010 1:01 pm
by medelec35
Very clever!
Must of taken quiet some time to create this.

Re: Christmas Sudoku

Posted: Mon Dec 27, 2010 6:43 pm
by Jan Lichtenbelt
Thanks for your reactions, all of you.

I came interested into Sudoku's due to Elektor magazine ( ). It publishes each month a Hexaduko (16x16 in stead of 9x9). Even in the July/August number they publish a special one. Once an Alphadoku (25x25) and an Alphanumsky (36x36). Hexadoku's can be with much trouble solved by hand. But all other needs a computer. I made a program for NxN Sudoku's in VBA, as used in e.g. Excel and Access. This took indeed a lot of time and after 3 years I'm still improving this program.

Honestly speaking, I solved a lot of Elektor Hexadoku's in this way. But, nevertheless, to my big surprise I won the first prize about a year ago. And that was....... Flowcode 4 with some E-blocks among which EB006! I was completely unknown in the field of microcontrollers. But I'm lost now and became a big supporter.

This explains the interest in Sudoku’s. In the Christmas Sudoku Flowcode the most difficult part for me, was the algorithm for the test of the numbers 1 until 9 in a box, for all 9 boxes.

Jan Lichtenbelt

Solution added at 1-1-2011 ... u_2010.doc