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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Mon May 09, 2011 3:17 am Post subject: Puzzle 11/05/08: A Advanced |
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| Code: | +-----------------------+
| . . 1 | . 7 8 | . 2 5 |
| . . 2 | . . 6 | . . . |
| 7 3 8 | 4 2 . | 6 . . |
|-------+-------+-------|
| . . 5 | 2 6 . | . 3 . |
| 3 . 4 | 5 . 1 | . . 2 |
| 6 2 . | . 4 . | . . . |
|-------+-------+-------|
| . . 6 | . . . | . . . |
| 5 . . | 1 . . | . 4 6 |
| 2 . . | . 8 . | . 5 . |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Mon May 09, 2011 4:12 am Post subject: |
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| Quote: | | Type 2 UR(19)r36c89; r5c7,r6c3<>7 |
Ted |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Mon May 09, 2011 4:31 am Post subject: |
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Another one step solution.........
| Quote: | | Type 1 BUG-Lite (349)r12c147; R2c7<>34=78 |
Ted |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Mon May 09, 2011 4:33 am Post subject: |
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Would you believe another AUR type one step solution....
| Quote: | AUR(48)r24c79 external sis r1c7=4,r2c8=8,r5c7=8; r2c9,r4c7<>4
(4)r1c7;
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(8)r2c8-(7)r2c8=r2c7-(7=8)r5c7-(8=4)r4c9
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(8)r5c7-(8=4)r4c9;
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Ted
[daj Edit: corrected (apparent) typos.] |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Tue May 10, 2011 12:55 am Post subject: |
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I used the DP 49-39-34 in boxes 123, which had a pseudo cell of 78 to combine with a like pair in both the box and column.
I noticed the Type 2 UR but just eyeballing it I thought the DP would be more productive, although I was wrong based on Ted's findings. |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Tue May 10, 2011 7:20 am Post subject: |
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Add a couple of obscure M-Wings as ways to crack this puzzle.
| Code: | +------------------------------------------------------------------------+
| 49 6 1 | 39 7 8 | 34 2 5 |
| 49 5 2 | 39 1 6 | b3478 c78 348 |
| 7 3 8 | 4 2 5 | 6 19 19 |
|-----------------------+-----------------------+------------------------|
| 18 189 5 | 2 6 7 | 489 3 48 |
| 3 78 4 | 5 9 1 | a78 6 2 |
| 6 2 79 | 8 4 3 | 5 b179 179 |
|-----------------------+-----------------------+------------------------|
| 18 1489 6 | 7 5 249 | 1239-8 d89 38 |
| 5 789 79 | 1 3 29 | 279-8 4 6 |
| 2 1479 3 | 6 8 49 | 179 5 79 |
+------------------------------------------------------------------------+
# 52 eliminations remain
M-Wing 7A (8=7)r5c7 - r6c8 = (7-8)r2c8 = (8)r7c8 => r78c7<>8
M-Wing 7B (8=7)r5c7 - r2c7 = (7-8)r2c8 = (8)r7c8 => r78c7<>8
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