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Jul 31 VH

 
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ZeroAssoluto



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

PostPosted: Mon Jul 31, 2023 9:00 am    Post subject: Jul 31 VH Reply with quote

Hi everyone,

Code:

+-------------+-------------+------------+
| 45  2    6  | 34 345  8   | 17  179 19 |
| 9   57   3  | 1  2    57  | 8   6   4  |
| 47  8    1  | 6  47   9   | 3   2   5  |
+-------------+-------------+------------+
| 15  3    2  | 8  9    457 | 157 147 6  |
| 8   1456 7  | 34 3456 456 | 9   14  2  |
| 56  9    45 | 2  4567 1   | 57  8   3  |
+-------------+-------------+------------+
| 3   156  8  | 7  16   2   | 4   159 19 |
| 2   145  45 | 9  8    3   | 6   15  7  |
| 167 167  9  | 5  146  46  | 2   3   8  |
+-------------+-------------+------------+

Play this puzzle online at the Daily Sudoku site

first step
Skyscraper with number 6 in r6c1,r7c2 SL in r67c5 and -6 in r5c2,r9c1

second step
X-Wing wuth number 1 in r58c28 and -1 in r79c2,r147c8

AND simple to the end

OR in only one step
XY-Chain from r4c1-5-r1c1-4-r1c4-3-r5c4-4-r5c8 and -1 in r5c2,r4c78

Ciao Gianni
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TomC



Joined: 30 Oct 2020
Posts: 358
Location: Wales

PostPosted: Mon Jul 31, 2023 11:56 am    Post subject: Reply with quote

Only one advanced move is needed

The X-Wing with number 1 in r58c28 and -1 in r79c2, followed by basics solves this one
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