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Too Hard 013018

 
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immpy



Joined: 06 May 2017
Posts: 574
PostPosted: Tue Jan 30, 2018 2:15 pm    Post subject: Too Hard 013018 Reply with quote
For the pencil and paper type solvers. Enjoy the puzzle...

Code:

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

Play this puzzle online at the Daily Sudoku site
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 1018
Location: Rimini, Italy
PostPosted: Tue Jan 30, 2018 11:10 pm    Post subject: Reply with quote
Hi everyone,

Code:

+----------------+-------------+--------------+
| 3568  3568 7   | 134 2   134 | 9    48 468  |
| 2     4    9   | 6   8   7   | 1    5  3    |
| 368   1    36  | 9   5   34  | 4678 2  4678 |
+----------------+-------------+--------------+
| 36    9    1   | 2   36  5   | 478  48 478  |
| 3468  368  346 | 13  7   136 | 5    9  2    |
| 7     2    5   | 8   4   9   | 3    6  1    |
+----------------+-------------+--------------+
| 34569 356  346 | 34  1   2   | 468  7  4689 |
| 3469  36   2   | 7   369 8   | 46   1  5    |
| 1     7    8   | 5   69  46  | 2    3  469  |
+----------------+-------------+--------------+

Play this puzzle online at the Daily Sudoku site

AIC: r4c1=3; r4c5=6; r8c5=3; r8c1=9; r8c7=4; r9c6=4; r5c6=6 and -6 in r4c5,r5c123.

Ciao Gianni
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immpy



Joined: 06 May 2017
Posts: 574
PostPosted: Wed Jan 31, 2018 7:59 am    Post subject: Reply with quote
Elegant solving technique Gianni, I needed many steps (all wings of the XY, XY flightless +1 ext.,XYZ, W, etc.) to get to the end. But at least I was able to get there.
I surely must become more adept at chains...

cheers...immp
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