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Jul 21 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 890
Location: Rimini, Italy

PostPosted: Fri Jul 21, 2023 7:25 am    Post subject: Jul 21 VH Reply with quote

Hi everyone,

Code:

+------------+---------+-------------+
| 134 49 6   | 5 8  34 | 7   29 12   |
| 348 7  39  | 1 2  34 | 6   5  89   |
| 18  2  5   | 6 7  9  | 18  3  4    |
+------------+---------+-------------+
| 5   1  89  | 3 4  6  | 2   7  89   |
| 2   49 389 | 7 5  1  | 348 69 36   |
| 34  6  7   | 8 9  2  | 34  1  5    |
+------------+---------+-------------+
| 9   5  4   | 2 36 7  | 13  8  136  |
| 67  3  2   | 9 1  8  | 5   4  67   |
| 67  8  1   | 4 36 5  | 9   26 2367 |
+------------+---------+-------------+

Play this puzzle online at the Daily Sudoku site

Quote:
3 steps
XY-Wing 3,4,9 in r1c2,r2c36 and -4 in r1c6,r2c1
and
W-Wing 3,6 in r5c9,r7c5 SL with number 3 in r9c59 and -6 in r7c9
and
UR 6,7 in r89c19 and r9c9=2

or in only one step
XY-Chain
r2c3-9-r2c9-8-r3c7-1-r7c7-3-r6c7-4-r6c1 and -3 in r12c1,r5c3


Ciao Gianni
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TomC



Joined: 30 Oct 2020
Posts: 356
Location: Wales

PostPosted: Fri Jul 21, 2023 1:19 pm    Post subject: Reply with quote

Using VH moves this can be solved with an X wing on <9> -9 in r5c3 followed by <348> XYZ wing -3 in r5c9
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