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Sep 21 VH

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Clement

Joined: 24 Apr 2006
Posts: 1113
Location: Dar es Salaam Tanzania

Posted: Sat Sep 21, 2013 12:21 am Post subject: Sep 21 VH

Code:

+-------------+---------------+---------------+
| 359 2 357 | 1467 379 8 | 47 146 3467 |
| *38 1 4 | 267 237 36 | 9 5 *3678 |
| 6 89 37 | 147 5 349 | 478 148 2 |
+-------------+---------------+---------------+
| 4 6 8 | 9 1 2 | 3 7 5 |
| 7 3 2 | 56 48 56 | 1 9 4-8 |
| 1 5 9 | 3 48 7 | 2 468 46-8 |
+-------------+---------------+---------------+
| 2 489 35 | 457 6 3459 | 4578 48 1 |
| *589 7 1 | 245 29 459 | 6 3 *489 |
| 359 49 6 | 8 379 1 | 457 2 479 |
+-------------+---------------+---------------+

X-Wing on 8 in row28; r56c9<>8 opens
XY-Wing 38-37-78 pivoted in r3c3; r3c2<>8, r2c9<>8; stte.

kuskey

Joined: 10 Dec 2008
Posts: 141
Location: Pembroke, NH

Posted: Sat Sep 21, 2013 7:46 am Post subject: Sep 21 VH

My first step was a type 1 UR on 48 in r56 which opened Clement's 378 xy wing.

arkietech

Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA

Posted: Sat Sep 21, 2013 11:22 am Post subject:

Code:

*-----------------------------------------------------------*
| 359 2 357 | 1467 379 8 | 47 146 3467 |
|b38 1 4 | 267 237 36 | 9 5 3678 |
| 6 a89 c37 | 147 5 d34-9 | 478 148 2 |
|-------------------+-------------------+-------------------|
| 4 6 8 | 9 1 2 | 3 7 5 |
| 7 3 2 | 56 48 56 | 1 9 48 |
| 1 5 9 | 3 48 7 | 2 468 468 |
|-------------------+-------------------+-------------------|
| 2 489 35 | 457 6 3459 | 4578 48 1 |
| 589 7 1 | 245 29 459 | 6 3 489 |
| 359 49 6 | 8 379 1 | 457 2 479 |
*-----------------------------------------------------------*
(9=8)r3c2-(8=3)r2c1-r3c3=3r3c6 => -9r3c6; ste

Marty R.

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

Posted: Sat Sep 21, 2013 7:30 pm Post subject:

I used X-Wings on 8, 3 and 9, then an XY-Wing on 89-3.

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