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Marty R.

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

Posted: Sun Nov 04, 2012 5:49 am Post subject: More Eureka

Ted's been teaching me off-line, but he's gone for a while and I hope someone else can help in his absence.

Code:

+------------+------------+----------+
| 4 3 8 | 5 7 1 | 9 2 6 |
| 6 1 7 | 8 2 9 | 3 5 4 |
| 2 5 9 | 36 46 346 | 8 7 1 |
+------------+------------+----------+
| 19 269 3 | 126 8 46 | 7 49 5 |
| 7 289 124 | 123 45 345 | 6 349 28 |
| 5 268 246 | 236 9 7 | 1 34 28 |
+------------+------------+----------+
| 3 4 5 | 7 1 8 | 2 6 9 |
| 8 7 26 | 9 56 256 | 4 1 3 |
| 19 269 126 | 4 3 26 | 5 8 7 |
+------------+------------+----------+

Play this puzzle online at the Daily Sudoku site

I can do a simple W-Wing with one strong link, but I don't know how to do this one other than I think the start and end should be (4=6) and (6=4).

It's the W-Wing on 46 in r3c5 and r4c6 with SL 6 in c4. Those can be used for an M-Wing as well, but I think I know to do that one.

arkietech

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

Posted: Sun Nov 04, 2012 2:31 pm Post subject:

Code:

+------------+------------+----------+
| 4 3 8 | 5 7 1 | 9 2 6 |
| 6 1 7 | 8 2 9 | 3 5 4 |
| 2 5 9 |b36 a46 346 | 8 7 1 |
+------------+------------+----------+
| 19 269 3 |b126 8 c46 | 7 49 5 |
| 7 289 124 | 123 45 345 | 6 349 28 |
| 5 268 246 |b236 9 7 | 1 34 28 |
+------------+------------+----------+
| 3 4 5 | 7 1 8 | 2 6 9 |
| 8 7 26 | 9 56 256 | 4 1 3 |
| 19 269 126 | 4 3 26 | 5 8 7 |
+------------+------------+----------+
(4=6)r3c5-6r46c4=6r3c4-(6=4)r3c5 => -4r5c5

daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Sun Nov 04, 2012 3:46 pm Post subject:

Correcting Dan's typos:

Code:

W-Wing: (4=6)r3c5 - r3c4 = r46c4 - (6=4)r4c6 => r3c6,r5c5<>4

Marty R.

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

Posted: Sun Nov 04, 2012 4:27 pm Post subject:

Thanks very much Dan and Danny.

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