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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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 Posted: Sun Dec 27, 2015 11:35 pm Post subject: Menneske #3659398, Super hard (33) |
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I couldn't find moves that opened it up and I ended up using an embarrassingly high number of steps.
| Code: |
+-------+-------+-------+
| 7 . . | 8 6 3 | . . 2 |
| . . 4 | . . . | 9 . . |
| . 8 . | 9 . 2 | . 3 . |
+-------+-------+-------+
| 3 . 6 | 4 . 1 | 2 . 8 |
| 9 . . | . . . | . . 3 |
| 8 . 1 | 2 . 9 | 6 . 7 |
+-------+-------+-------+
| . 6 . | 3 . 4 | . 7 . |
| . . 3 | . . . | 8 . . |
| 1 . . | 6 5 8 | . . 4 |
+-------+-------+-------+
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Play this puzzle online at the Daily Sudoku site |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Mon Dec 28, 2015 10:24 am Post subject: |
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Marty,
This is a trivial puzzle. Did you post the wrong one?
Keith
| Code: | +-------------------+-------------------+-------------------+
| 7 159 59 | 8 6 3 | 145 145 2 |
| 256 1235 4 | 157 17 57 | 9 1568 156 |
| 56 8 5 | 9 147 2 | 1457 3 156 |
+-------------------+-------------------+-------------------+
| 3 57 6 | 4 7 1 | 2 59 8 |
| 9 2457 257 | 57 78 567 | 145 145 3 |
| 8 45 1 | 2 3 9 | 6 45 7 |
+-------------------+-------------------+-------------------+
| 25 6 2589 | 3 129 4 | 15 7 159 |
| 245 24579 3 | 17 1279 7 | 8 12569 1569 |
| 1 279 279 | 6 5 8 | 3 29 4 |
+-------------------+-------------------+-------------------+
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Mon Dec 28, 2015 7:24 pm Post subject: |
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Keith, the puzzle posted is not the one I intended to show. I don't know what a trivial puzzle means. Below is the Menneske puzzle I meant to post.
| Code: |
+-------+-------+-------+
| . . . | . . 5 | . . . |
| 9 2 8 | . 3 4 | . . . |
| 5 7 . | . 6 . | . 1 . |
+-------+-------+-------+
| 7 1 . | . . . | . . . |
| . 5 9 | . . . | 8 6 . |
| . . . | . . . | . 3 1 |
+-------+-------+-------+
| . 6 . | . 8 . | . 4 9 |
| . . . | 3 7 . | 6 2 8 |
| . . . | 4 . . | . . . |
+-------+-------+-------+
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Play this puzzle online at the Daily Sudoku site |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Mon Dec 28, 2015 9:17 pm Post subject: |
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Marty,
"Trivial" means it can be solved by singles only. It does not even need any pairs or naked sets.
Keith |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Mon Dec 28, 2015 9:47 pm Post subject: |
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After basics:
| Code: | +----------------+----------------+----------------+
| 16 34 16 | 7 29 5 | 2349 8 234 |
| 9 2 8 | 1 3 4 | 57 57 6 |
| 5 7 34 | 89 6 289 | 2349 1 234 |
+----------------+----------------+----------------+
| 7 1 36 | 68 45 38 | 245 9 245 |
| 34 5 9 | 2 14 137 | 8 6 47 |
| 2468 48 246 | 69 459 79 | 457 3 1 |
+----------------+----------------+----------------+
| 123 6 1237 | 5 8 12 | 137 4 9 |
| 14 49 5 | 3 7 19 | 6 2 8 |
| 1238 389 1237 | 4 129 6 | 1357 57 357 |
+----------------+----------------+----------------+
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There is a Type 1 UR (57) that does not help much.
Then, it needs a bunch of chains. I do not see a clever solution.
Keith |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Tue Dec 29, 2015 12:14 am Post subject: |
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| Quote: |
Then, it needs a bunch of chains. I do not see a clever solution. |
Yep. After the useless UR there were M-, XY- and Finned X-Wings. Then four chains and finished it off with coloring, which I guess is a form of chain. |
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