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A nice Advanced Puzzle 020520

 
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immpy



Joined: 06 May 2017
Posts: 295

PostPosted: Thu Feb 06, 2020 5:17 am    Post subject: A nice Advanced Puzzle 020520 Reply with quote

Hello all, enjoy the puzzle...

Code:

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

Play this puzzle online at the Daily Sudoku site

cheers...immp
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 502
Location: Rimini, Italy

PostPosted: Thu Feb 06, 2020 9:44 am    Post subject: Reply with quote

Hi everyone,

Code:

+----------------+---------+---------------+
| 7    2356 56   | 4  8  1 | 23 236   9    |
| 169  3689 4689 | 2  69 7 | 5  346   146  |
| 1269 269  469  | 5  69 3 | 7  8     1246 |
+----------------+---------+---------------+
| 3    4    1    | 7  5  2 | 6  9     8    |
| 8    67   67   | 9  1  4 | 23 23    5    |
| 59   59   2    | 8  3  6 | 4  1     7    |
+----------------+---------+---------------+
| 269  1    78   | 3  24 5 | 89 2467  246  |
| 256  78   3    | 16 24 9 | 18 24567 246  |
| 4    2569 569  | 16 7  8 | 19 256   3    |
+----------------+---------+---------------+

Play this puzzle online at the Daily Sudoku site

solution in one step

AIC
if r5c3=6 r7c3=7 r7c7=8 r7c1=9 r6c1=5 r8c8=5 r8c2=7 and -7 in r5c2,r7c3
if r5c3=7 -7 in r5c2,r7c3

Ciao Gianni
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