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VH+ 072022

 
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immpy



Joined: 06 May 2017
Posts: 571
PostPosted: Thu Jul 21, 2022 2:01 am    Post subject: VH+ 072022 Reply with quote
Hello all, enjoy the puzzle.

Code:

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

Play this puzzle online at the Daily Sudoku site

cheers...immp
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
PostPosted: Thu Jul 21, 2022 4:24 pm    Post subject: VH + 072022 Reply with quote
Can't find a single step. Two Steps
Code:

+-------------------+------------------+-------------------+
| 9      47      3  | 2      8     6   | 5     1      47   |
| 457    457    e68 | 3      1     9   | 47   f268    268  |
| 2     d68      1  | 5      4     7   | 3     9      68   |
+-------------------+------------------+-------------------+
| 14     9       7  | 148    2     145 | 6    g8-5    3    |
| 68     2       5  | 7      69    3   | 1     4      89   |
| 3      14      68 | 148    69    145 | 2     7      589  |
+-------------------+------------------+-------------------+
| 67   bc367     4  | 9      5     2   | 8    b36     1    |
| 158    158     9  | 6      3     14  | 47    25     2457 |
| 156  bc1356    2  | 14     7     8   | 9   ab356    456  |
+-------------------+------------------+-------------------+

Step 1: (5)r9c8 = Type 4 UR(36)r79c28 - (6)r79c2 = r3c2 - (6=8)r2c3 - r2c8 = (8)r4c8 => - 5r4c8
Code:

+-------------------+-----------------+--------------------+
| 9       47      3 | 2      8     6  | 5      1       47  |
| 457     457     8 | 3      1     9  | 47    g26     f26  |
| 2       6       1 | 5      4     7  | 3      9       8   |
+-------------------+-----------------+--------------------+
|b14      9       7 |c14     2     5  | 6      8       3   |
| 8       2       5 | 7      6     3  | 1      4       9   |
| 3       14      6 | 8      9     14 | 2      7       5   |
+-------------------+-----------------+--------------------+
| 67      37      4 | 9      5     2  | 8      36      1   |
|a15      8       9 | 6      3     14 | 47    h2-5     247 |
| 156     135     2 |d14     7     8  | 9      356    e46  |
+-------------------+-----------------+--------------------+

Step 2: (5=1)r8c1 - r4c1 = r4c4 - (1=4)r9c4 - (4=6)r9c9 - (6=2)r2c9 - r2c8 = (2)r8c8 => - 5r8c8; stte
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