X-sudou with empty diagonal boxes

For fans of Killer Sudoku, Samurai Sudoku and other variants

X-sudou with empty diagonal boxes

Postby m_b_metcalf » Wed Jun 20, 2018 8:35 am

This puzzle has all the diagonal boxes empty, but can be solved with basic techniques.

Code: Select all
 . . . . 9 3 . . .       . . . . 5 9 . . .
 . . . . . . . . .       . . . 8 . 2 . . .
 . . . 1 . 5 . . .       . . . . . 4 . . .
 . 2 4 . . . . . 8       . 3 . . . . 8 . .
 8 3 7 . . . . 4 2       . . 6 . . . . 7 3
 5 . . . . . . . 9       4 . . . . . . 6 .
 . . . 7 . . . . . . . . . . . 6 4 1 . . .
 . . . 4 3 . . . . 4 . 6 . . . 7 . . . . .
 . . . . . . . . . 5 . . . . . . . 8 . . .
             . . 3 . . . . . .
             . . . . . . . . .
             . . . . . . 2 . .
 . . . 5 . . . . . . . 5 . . . . . . . . .
 . . . . . 8 . . . 3 . 1 . . . . 2 4 . . .
 . . . 7 4 2 . . . . . . . . . . . 7 . . .
 . 5 . . . . . . 8       8 . . . . . . . 4
 8 6 . . . . 7 . .       4 1 . . . . 9 2 5
 . . 7 . . . . 4 .       7 . . . . . 1 6 .
 . . . 4 . . . . .       . . . 6 . 9 . . .
 . . . 1 . 5 . . .       . . . . . . . . .
 . . . 3 8 . . . .       . . . 8 4 . . . . 

 Number of clues 76; all diagonal boxes empty; fairly easy; symmetric.


Code: Select all
000093000000000000000105000024000008837000042500000009000700000000430000000000000  TL
000059000000802000000004000030000800006000073400000060000641000000700000000008000  TR
000000000000406000000500000003000000000000000000000200000005000000301000000000000   M
000500000000008000000742000050000008860000700007000040000400000000105000000380000  BL
000000000000024000000007000800000004410000925700000160000609000000000000000840000  BR



EDIT: Sorry for the glitch, but there was an editing error in BR, row 6, where all the row should be shifted left one position, now corrected in new version below. Mea culpa :oops:
Attachments
butterfly.doc
(66 KiB) Downloaded 3 times
User avatar
m_b_metcalf
2017 Supporter
 
Posts: 8983
Joined: 15 May 2006
Location: Berlin

Re: X-sudou with empty diagonal boxes

Postby enxio27 » Wed Jun 20, 2018 1:32 pm

Cool! :D Nice to have a puzzle from you that I have a hope of solving. :lol:
User avatar
enxio27
 
Posts: 447
Joined: 13 November 2007


Return to Sudoku variants