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A VH+ that I enjoyed doing today

 
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dongrave



Joined: 06 Mar 2014
Posts: 568
PostPosted: Wed Jul 15, 2020 12:11 am    Post subject: A VH+ that I enjoyed doing today Reply with quote
I usually do at least one VH+ puzzle from other sites on days that this site doesn't have a VH. This was an 'evil' one (i.e. VH+) from 1sudoku and I also enjoy doing the 'Advanced' puzzles that appear on Helmut's site on Saturdays.
Code:
1sudoku n 518043, Level: Evil
+-------+-------+-------+
| . . 2 | 3 . . | . . . |
| . 3 9 | . . . | . 4 . |
| . . . | . 9 2 | . 3 8 |
+-------+-------+-------+
| . . 8 | 4 . 5 | . . 2 |
| . . 6 | . 2 . | 9 . . |
| 4 . . | 7 . 9 | 1 . . |
+-------+-------+-------+
| 2 9 . | 5 4 . | . . . |
| . 5 . | . . . | 4 2 . |
| . . . | . . 1 | 6 . . |
+-------+-------+-------+
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
PostPosted: Thu Jul 16, 2020 4:37 pm    Post subject: A VH + that I enjoyed doing to day Reply with quote
Code:

+--------------------+--------------------+-------------------+
| 1578    j68    2   | 3      1578    4   | 57   k69     k169 |
| 1578     3     9   |b168    1578    78  | 2     4     la6-1 |
| 157     h46   g457 | 16     9       2   | 57    3       8   |
+--------------------+--------------------+-------------------+
| 9        17    8   | 4      16      5   | 3     67      2   |
|e35       17    6   |c18     2      d38  | 9     578     4   |
| 4        2    f35  | 7      368     9   | 1     568     56  |
+--------------------+--------------------+-------------------+
| 2        9     37  | 5      4       6   | 8     1       37  |
| 6        5     1   | 9      378     378 | 4     2       37  |
| 378     i48    347 | 2      37      1   | 6     59      59  |
+--------------------+--------------------+-------------------+

(6)r2c9 = (6-8)r2c4 = r5c4 - (8=3)r5c6 - (3=5)r5c1 - r6c3 = (5-4)r3c3 = r3c2 - (4=8)r9c2 - (8=6)r1c2 - r1c89 = (6)r2c9 => - 1r2c9; stte
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dongrave



Joined: 06 Mar 2014
Posts: 568
PostPosted: Thu Jul 16, 2020 5:32 pm    Post subject: Reply with quote
Good one Clement! Beginning with your grid I used the following forcing chain: (6=8)r1c2-(8=157)r123c1-(5=3)r5c1-(3=8)r5c6-(8=1)r5c4-(1=6)r3c4 => r3c2<>6.
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
PostPosted: Fri Jul 17, 2020 7:40 am    Post subject: Reply with quote
dongrave wrote:
Good one Clement! Beginning with your grid I used the following forcing chain: (6=8)r1c2-(8=157)r123c1-(5=3)r5c1-(3=8)r5c6-(8=1)r5c4-(1=6)r3c4 => r3c2<>6.
Thanks. It was a good puzzle.
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