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Super hard II

 
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Ajò Dimonios



Joined: 01 May 2017
Posts: 339
Location: Sassari Italy
PostPosted: Thu Jun 22, 2017 1:07 pm    Post subject: Super hard II Reply with quote
Hi everyone


Code:

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

Play this puzzle online at the Daily Sudoku site


Ciao a tutti
Paolo
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JC Van Hay



Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium
PostPosted: Thu Jun 22, 2017 8:01 pm    Post subject: Reply with quote
7r9c1 -> 0 solution; 7r9c8 -> 1 solution
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Ajò Dimonios



Joined: 01 May 2017
Posts: 339
Location: Sassari Italy
PostPosted: Thu Jun 22, 2017 8:12 pm    Post subject: Reply with quote
R7C1=2=>0 solution=>-2 R7C1=>stte
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JC Van Hay



Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium
PostPosted: Thu Jun 22, 2017 10:21 pm    Post subject: Reply with quote
Détails :

Basics :
4 singles; r2c45.r3c5=128
{2C27, 3B1, 4C4, 6R17C8} -> -{2r4c1, 3r46c1, 4r8c56, 6r346c9}

7r9c1 -> 5R2=Ø ; stte :
Code:
+------------------------+---------------------+----------------------+
| 1        45     8      | 3      46     9     | 567     2       467  |
| 346(5)   7      4(56)  | 8(2)   8(12)  (46)  | 68(15)  36(15)  9    |
| 346      9      2      | 7      18     5     | 168     136     348  |
+------------------------+---------------------+----------------------+
| 456      12345  7      | 9      34568  (346) | 1268    (136)   238  |
| 8        34     49(6)  | 1      346    2     | (67)    369(7)  5    |
| (256)    1235   159(6) | 8(6)   3568   7     | 4       1369    238  |
+------------------------+---------------------+----------------------+
| (27)     8      3      | 5      267    1     | 9       4       26-7 |
| 9        1245   145    | 2(46)  2367   36    | 2567    8       267  |
| 45-7(2)  6      45     | (24)   9      8     | 3       (57)    1    |
+------------------------+---------------------+----------------------+
Code:
7r7c1 2r7c1
      2r9c1 2r9c4
            2r2c4 2r2c5
            4r9c4       4r8c4
                        6r8c4 6r6c4
      2r6c1                   6r6c1 5r6c1
7r9c8                                     7r5c8
                                          7r5c7 6r5c7
                              6r6c3             6r5c3 6r2c3
                                                      3r2c6 4r2c6
                              6r4c6                         4r4c6 3r4c6
                                                6r4c8             3r4c8 1r4c8
                  1r2c5                                                 1r2c8 1r2c7
7r9c8                                                                               5r9c8
                                    5r2c1             5r2c3                   5r2c7 5r2c8 => [7r7c1==7r9c8]-7r9c1.r7c9; stte
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