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A nice Advanced Puzzle 020520

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immpy

Joined: 06 May 2017
Posts: 571

Posted: Thu Feb 06, 2020 5:17 am Post subject: A nice Advanced Puzzle 020520

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

ZeroAssoluto

Joined: 05 Feb 2017
Posts: 942
Location: Rimini, Italy

Posted: Thu Feb 06, 2020 9:44 am Post subject:

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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