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There Was a Time: 04/21/13

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There Was a Time: 04/21/13

Postby daj95376 » Sun Apr 21, 2013 3:06 pm

Code: Select all
 +-----------------------+
 | 6 . . | . . . | . . 3 |
 | . 8 1 | 9 6 . | . . . |
 | . 7 . | . . . | . . . |
 |-------+-------+-------|
 | . 2 . | 3 8 9 | . 4 6 |
 | . 5 . | 2 1 . | 3 8 . |
 | . . . | 6 . . | . 2 . |
 |-------+-------+-------|
 | . . . | . 5 . | 4 . . |
 | . . . | 1 2 6 | . . . |
 | 8 . . | 7 . . | . . . |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site
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Re: There Was a Time: 04/21/13

Postby ArkieTech » Sun Apr 21, 2013 4:55 pm

Code: Select all
 *-----------------------------------------------------------*
 | 6     49    2459  | 45    7     18    | 289   19    3     |
 | 3     8     1     | 9     6     2     | 7     5     4     |
 | 25    7     2459  | 45    3     18    | 2689  169   128   |
 |-------------------+-------------------+-------------------|
 | 1     2     7     | 3     8     9     | 5     4     6     |
 | 4     5     6     | 2     1     7     | 3     8     9     |
 | 9     3     8     | 6     4     5     | 1     2     7     |
 |-------------------+-------------------+-------------------|
 | 27    16    29    | 8     5     3     | 4     1679  12    |
 |c57    49    3459  | 1     2     6     |a89   d379  b58    |
 | 8     16    235   | 7     9     4     | 26    136   125   |
 *-----------------------------------------------------------*
(9=8)r8c7-(8=5)r8c9-(5=7)r8c1-r8c8=7r7c8 => -9r7c8; ste
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Re: There Was a Time: 04/21/13

Postby 7b53 » Sun Apr 21, 2013 7:39 pm

DP 45 r13c34
(2)r7c1 = (9)r8c2 -> 8r8c7 -> 5r8c9 -> 7r8c1 -> 2r7c1 => r7c1=2

(5)r3c1 = (4)r1c2 -> 9r8c2 -> 8r8c7 -> 5r8c9 => r8c1 <> 5
Last edited by 7b53 on Sun Apr 21, 2013 8:21 pm, edited 1 time in total.
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Re: There Was a Time: 04/21/13

Postby Marty R. » Sun Apr 21, 2013 7:58 pm

Code: Select all
+------------+---------+---------------+
| 6  49 2459 | 45 7 18 | 289  19   3   |
| 3  8  1    | 9  6 2  | 7    5    4   |
| 25 7  2459 | 45 3 18 | 2689 169  128 |
+------------+---------+---------------+
| 1  2  7    | 3  8 9  | 5    4    6   |
| 4  5  6    | 2  1 7  | 3    8    9   |
| 9  3  8    | 6  4 5  | 1    2    7   |
+------------+---------+---------------+
| 27 16 29   | 8  5 3  | 4    1679 12  |
| 57 49 3459 | 1  2 6  | 89   379  58  |
| 8  16 235  | 7  9 4  | 26   136  125 |
+------------+---------+---------------+

Play this puzzle online at the Daily Sudoku site

Finned X-Wing 9 + UR 45 + XY-Wing 29-8, but when in Rome, do as the Romans do. :lol:

-9r7c3=(9-7)r7c8=r8c8-(758=9)r8c197=>r7c8,r8c2<>9
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Re: There Was a Time: 04/21/13

Postby Leren » Sun Apr 21, 2013 9:31 pm

Code: Select all
*--------------------------------------------------------------*
| 6     49    2459   | 45    7     18     | 289   19    3      |
| 3     8     1      | 9     6     2      | 7     5     4      |
| 25    7     2459   | 45    3     18     | 2689  169   128    |
|--------------------+--------------------+--------------------|
| 1     2     7      | 3     8     9      | 5     4     6      |
| 4     5     6      | 2     1     7      | 3     8     9      |
| 9     3     8      | 6     4     5      | 1     2     7      |
|--------------------+--------------------+--------------------|
| 27    16   b29     | 8     5     3      | 4    c1679  12     |
| 57   a49   e35-49  | 1     2     6      | 89   d379   58     |
| 8     16    235    | 7     9     4      | 26    136   125    |
*--------------------------------------------------------------*

L3-wing with bi-value extension cell: (4=9) r8c2 - r7c3 = (9-7)r7c8 = (7-3) r8c8 = r8c3 => -49 r8c3; stte

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Re: There Was a Time: 04/21/13

Postby eleven » Sun Apr 21, 2013 10:03 pm

Marty R. wrote:
Code: Select all
+------------+---------+---------------+
| 6  49 2459 | 45 7 18 | 289  19   3   |
| 3  8  1    | 9  6 2  | 7    5    4   |
| 25 7  2459 | 45 3 18 | 2689 169  128 |
+------------+---------+---------------+
| 1  2  7    | 3  8 9  | 5    4    6   |
| 4  5  6    | 2  1 7  | 3    8    9   |
| 9  3  8    | 6  4 5  | 1    2    7   |
+------------+---------+---------------+
| 27 16 29   | 8  5 3  | 4    1679 12  |
| 57 49 3459 | 1  2 6  | 89   379  58  |
| 8  16 235  | 7  9 4  | 26   136  125 |
+------------+---------+---------------+

Finned X-Wing 9 + UR 45 + XY-Wing 29-8, but when in Rome, do as the Romans do. :lol:

UR 45 in r13c34: r89c3=5 or r8c3=4->r8c2=9->r8c7=8->r8c9=5 => r8c1<>5
(ok, r8c3=4 also implies r8c1=5 in box 7 ...)
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Re: There Was a Time: 04/21/13

Postby Leren » Mon Apr 22, 2013 12:12 am

Code: Select all
*--------------------------------------------------------------*
| 6     49    459-2  | 45    7     18     | 289   19    3      |
| 3     8     1      | 9     6     2      | 7     5     4      |
|b25    7    b2459   |b45    3     18     | 2689  169   128    |
|--------------------+--------------------+--------------------|
| 1     2     7      | 3     8     9      | 5     4     6      |
| 4     5     6      | 2     1     7      | 3     8     9      |
| 9     3     8      | 6     4     5      | 1     2     7      |
|--------------------+--------------------+--------------------|
| 27    16   a29     | 8     5     3      | 4     1679  12     |
| 57    49    3459   | 1     2     6      | 89    379   58     |
| 8     16    235    | 7     9     4      | 26    136   125    |
*--------------------------------------------------------------*

als-xz rule: (2=9) r7c3 - (9=2) r3c134 => -2 r1c3; stte

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Re: There Was a Time: 04/21/13

Postby Marty R. » Mon Apr 22, 2013 12:21 am

UR 45 in r13c34: r89c3=5 or r8c3=4->r8c2=9->r8c7=8->r8c9=5 => r8c1<>5


Nice. I never thought of doing the external and the internal didn't seem to take things very far.
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