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Oct 9 VH

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Marty R.

Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

Posted: Sun Oct 09, 2016 8:04 am Post subject: Oct 9 VH

Code:

+--------------+--------+--------------+
| 36 367 1 | 2 9 4 | 368 5 3678 |
| 8 369 2 | 36 5 7 | 4 1 369 |
| 4 5 379 | 36 1 8 | 369 2 3679 |
+--------------+--------+--------------+
| 39 1 389 | 7 4 6 | 2 89 5 |
| 56 678 578 | 1 2 9 | 368 48 3468 |
| 2 69 4 | 8 3 5 | 1 7 69 |
+--------------+--------+--------------+
| 359 389 3589 | 4 7 2 | 89 6 1 |
| 7 4 6 | 9 8 1 | 5 3 2 |
| 1 2 89 | 5 6 3 | 7 489 489 |
+--------------+--------+--------------+

Play this puzzle online at the Daily Sudoku site

This was the "hardest" VH that I can remember for a long time.

Quote:

1. XY-Wing (39-6) pivot r4c1 2. X-Wing (9)r26 3, XY-Wing (38-9) pivot r7c2. Did anyone else need three moves?

JC Van Hay

Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium

Posted: Sun Oct 09, 2016 8:37 am Post subject:

Code:

+------------------+----------+------------------+
| 36 367 1 | 2 9 4 | 368 5 3678 |
| 8 369 2 | 36 5 7 | 4 1 369 |
| 4 5 379 | 36 1 8 | 369 2 3679 |
+------------------+----------+------------------+
| 3(9) 1 389 | 7 4 6 | 2 8(9) 5 |
| 56 678 578 | 1 2 9 | 368 48 3468 |
| 2 69 4 | 8 3 5 | 1 7 69 |
+------------------+----------+------------------+
| 35(9) 389 3589 | 4 7 2 | 8-9 6 1 |
| 7 4 6 | 9 8 1 | 5 3 2 |
| 1 2 8-9 | 5 6 3 | 7 48(9) 489 |
+------------------+----------+------------------+

XWing{9C18} -> -{9r7c7, 9r9c3}; stte

Marty R.

Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

Posted: Sun Oct 09, 2016 4:02 pm Post subject:

Nice, JC. My three-stepper looks pretty weak in comparison. I know there was a discussion in a recent thread, But I find it difficult to view that as an X-Wing, as opposed to a Skyscraper. What little I know was learned when I was new and impressionable and it sticks with me.

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