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By Daily-Sudoku.com VH 2014-02-25

 
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Clement



Joined: 24 Apr 2006
Posts: 663
Location: Dar es Salaam Tanzania

PostPosted: Mon Mar 03, 2014 6:50 am    Post subject: By Daily-Sudoku.com VH 2014-02-25 Reply with quote

Code:

+-------+-------+-------+
| . . . | 1 . 4 | . 9 . |
| . 3 5 | . . . | . . . |
| . . . | . . . | 8 . 6 |
+-------+-------+-------+
| . . . | 2 8 . | . . . |
| 1 8 . | . . . | . 6 4 |
| . . . | . 6 7 | . . . |
+-------+-------+-------+
| 9 . 2 | . . . | . . . |
| . . . | . . . | 5 7 . |
| . 4 . | 8 . 3 | . . . |
+-------+-------+-------+

Play this puzzle online at the Daily Sudoku site
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arkietech



Joined: 31 Jul 2008
Posts: 1712
Location: Northwest Arkansas USA

PostPosted: Mon Mar 03, 2014 12:10 pm    Post subject: Reply with quote

Code:
 *--------------------------------------------------*
 | 8   a27   6    | 1    237  4    |b37   9    5    |
 | 47   3    5    | 6    9    8    | 17   14   2    |
 | 247  1    9    | 37   237  5    | 8    34   6    |
 |----------------+----------------+----------------|
 | 6   c59   4    | 2    8    1    |b39   35   7    |
 | 1    8    7    | 35   35   9    | 2    6    4    |
 | 25  d59-2 3    | 4    6    7    | 19   15   8    |
 |----------------+----------------+----------------|
 | 9    57   2    | 57   1    6    | 4    8    3    |
 | 3    6    8    | 9    4    2    | 5    7    1    |
 | 57   4    1    | 8    57   3    | 6    2    9    |
 *--------------------------------------------------*
(2=7)r1c2-(7=9)r14c7-r4c2=9r6c2 => -2r6c2; ste
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Marty R.



Joined: 12 Feb 2006
Posts: 5148
Location: Rochester, NY, USA

PostPosted: Mon Mar 03, 2014 6:11 pm    Post subject: Reply with quote

Code:

+-----------+----------+---------+
| 8   27  6 | 1  237 4 | 37 9  5 |
| 47  3   5 | 6  9   8 | 17 14 2 |
| 247 1   9 | 37 237 5 | 8  34 6 |
+-----------+----------+---------+
| 6   59  4 | 2  8   1 | 39 35 7 |
| 1   8   7 | 35 35  9 | 2  6  4 |
| 25  259 3 | 4  6   7 | 19 15 8 |
+-----------+----------+---------+
| 9   57  2 | 57 1   6 | 4  8  3 |
| 3   6   8 | 9  4   2 | 5  7  1 |
| 57  4   1 | 8  57  3 | 6  2  9 |
+-----------+----------+---------+

Play this puzzle online at the Daily Sudoku site

XY-Chain: (2=5)r6c1-(5=9)r4c2-(9=3)r4c7-(3=7)r1c7-(7=2)r1c2=>r3c1<>2

Alternate pattern-based solution: Skyscraper on 7 in c24 leaves BUG+2
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Clement



Joined: 24 Apr 2006
Posts: 663
Location: Dar es Salaam Tanzania

PostPosted: Mon Mar 03, 2014 9:19 pm    Post subject: Reply with quote

Code:

+-----------+----------+---------+
| 8   27  6 | 1  237 4 | 37 9  5 |
| c47  3   5 | 6  9   8 | 17 b14 2 |
| 247 1   9 | 37 237 5 | 8  34 6 |
+-----------+----------+---------+
| 6   59  4 | 2  8   1 | 39 35 7 |
| 1   8   7 | 35 35  9 | 2  6  4 |
| 2-5  259 3 | 4  6   7 | 19 a15 8 |
+-----------+----------+---------+
| 9   57  2 | 57 1   6 | 4  8  3 |
| 3   6   8 | 9  4   2 | 5  7  1 |
| d57  4   1 | 8  57  3 | 6  2  9 |
+-----------+----------+---------+
Another XY Chain
(5=1)r6c8-(1=4)r2c8-(4=7)r2c1-(7=5)r9c1; r6c1<>5; stte.
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Leren



Joined: 13 May 2013
Posts: 5

PostPosted: Tue Mar 04, 2014 12:45 am    Post subject: Reply with quote

Code:
*-----------------------------------------------------*
| 8    27   6     | 1    237  4     | 37   9    5     |
| 47   3    5     | 6    9    8     | 17   14   2     |
| 247  1    9     |b37   237  5     | 8   c34   6     |
|-----------------+-----------------+-----------------|
| 6   e59   4     | 2    8    1     | 39  d35   7     |
| 1    8    7     | 35   35   9     | 2    6    4     |
| 25   259  3     | 4    6    7     | 19   15   8     |
|-----------------+-----------------+-----------------|
| 9    7-5  2     |a57   1    6     | 4    8    3     |
| 3    6    8     | 9    4    2     | 5    7    1     |
| 57   4    1     | 8    57   3     | 6    2    9     |
*-----------------------------------------------------*

(5=7) r7c4 - (7=3) r3c4 - r3c8 = (3-5) r4c8 = (5) r4c2 => - 5 r7c2; stte

Leren
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