Cross My Heart (Sudoku X)

For fans of Killer Sudoku, Samurai Sudoku and other variants

Cross My Heart (Sudoku X)

Postby mith » Mon Aug 24, 2020 4:35 pm

Code: Select all
+-------+-------+-------+
| . . . | . . . | . . . |
| . . 3 | . . 4 | 1 . . |
| . 2 . | . 1 . | . 5 . |
+-------+-------+-------+
| 3 . . | . . . | . . 9 |
| 9 . * | . 3 . | . . 2 |
| . 7 . | . . . | . 6 . |
+-------+-------+-------+
| . * 9 | . . . | 5 * . |
| . . . | 8 . 3 | . . . |
| . . * | . 5 . | . . . |
+-------+-------+-------+
Place the next digit of pi at one of the marked locations for four different Sudoku X puzzles. (ER 7.9-9.3)

...........3..41...2..1..5.3.......99...3...2.7.....6...9...5.....8.3.......5....


(Made this one for my wife, whose birthday is Pi Day.)
mith
 
Posts: 225
Joined: 14 July 2020

Re: Cross My Heart (Sudoku X)

Postby m_b_metcalf » Mon Aug 24, 2020 5:08 pm

Very nice.

If your wife likes solving puzzles by hand, may I present her with this one?

Regards,

Mike

Code: Select all
 . . . . . . . . .
 . . 1 2 . 3 4 . .
 . 3 . . 5 . . 6 .
 3 . . . . . . . 2
 1 . . . 2 . . . 3
 . 7 . . . . . 5 .
 . . 8 . . . 7 . .
 . . . 4 . 9 . . .
 . . . . 7 . . . .
Attachments
samples9.doc
X-heart, not too hard
(45.5 KiB) Downloaded 3 times
User avatar
m_b_metcalf
2017 Supporter
 
Posts: 11122
Joined: 15 May 2006
Location: Berlin

Re: Cross My Heart (Sudoku X)

Postby mith » Mon Aug 24, 2020 7:36 pm

She doesn’t actually solve them (yet!), she just liked the design :)

[edit]Nice puzzle though, now that I've had a chance to try it.

Code: Select all
+-------------+-------------+-------------+
| 68  89  69  | 7   1   4   | 3   2   5   |
| 7   5   1   | 2   6   3   | 4   9   8   |
| 2   3   4   | 9   5   8   | 1   6   7   |
+-------------+-------------+-------------+
| 3   89  5   | 68  4   7   | 689 1   2   |
| 1   4   69  | 568 2   56  | 689 7   3   |
| 68  7   2   | 3   9   1   | 68  5   4   |
+-------------+-------------+-------------+
| 9   12  8   | 15  3   25  | 7   4   6   |
| 5   6   7   | 4   8   9   | 2   3   1   |
| 4   12  3   | 16  7   26  | 5   8   9   |
+-------------+-------------+-------------+


Probably lots of ways to resolve this, but the one I spotted was that the 68 in r4c4 = r1c1 = r6c1 = r6c7 forces a 9 in r4c7. (I'm not sure what that's called or how to notate it correctly. :))
mith
 
Posts: 225
Joined: 14 July 2020

Re: Cross My Heart (Sudoku X)

Postby m_b_metcalf » Tue Aug 25, 2020 6:52 am

Glad you liked it. I solved it with an xy-wing at r4c24 and r5c3.

You might like this one too, based on the most recent pattern.
User avatar
m_b_metcalf
2017 Supporter
 
Posts: 11122
Joined: 15 May 2006
Location: Berlin


Return to Sudoku variants