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Dec 25 VH

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ZeroAssoluto

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

Posted: Sun Dec 25, 2022 10:19 am Post subject: Dec 25 VH

Hi everyone,

Code:

+---------+------------+-----------+
| 9 5 8 | 2 3 4 | 6 7 1 |
| 2 4 3 | 6 1 7 | 59 59 8 |
| 7 1 6 | 89 89 5 | 2 4 3 |
+---------+------------+-----------+
| 8 36 59 | 4 2 39 | 7 1 56 |
| 1 36 2 | 5 7 8 | 49 39 46 |
| 4 7 59 | 39 6 1 | 58 358 2 |
+---------+------------+-----------+
| 6 2 47 | 3789 89 39 | 1 58 45 |
| 5 8 17 | 17 4 2 | 3 6 9 |
| 3 9 14 | 18 5 6 | 48 2 7 |
+---------+------------+-----------+

Play this puzzle online at the Daily Sudoku site

Quote:

XY-Wing 4,5,8 in r69c7,r7c9 and -5 in r4c9
or
W-Wing 5,8 in r6c7,r7c8 SL with number 5 in r2c78 and -8 in r6c8,r9c7
or
W-Wing 5,8 in r6c7,r7c8 SL with number 5 in r47c9 and -8 in r6c8,r9c7

Happy Christmas and happy holidays
Gianni

storm_norm22

Joined: 24 Oct 2020
Posts: 15

Posted: Sun Dec 25, 2022 5:01 pm Post subject:

some m-wing on this holiday (5=8)r6c7 - (8)r6c8 = (8-5)r7c8 = (5)r7c9; r4c9 <> 5

TomC

Joined: 30 Oct 2020
Posts: 358
Location: Wales

Posted: Sun Dec 25, 2022 6:37 pm Post subject:

Remove <5> from r7c8 to solve

Code:

+-----------+-------------+-------------+
| 9 5 8 | 2 3 4 | 6 7 1 |
| 2 4 3 | 6 1 7 | 59 a59 8 |
| 7 1 6 | 89 89 5 | 2 4 3 |
+-----------+-------------+-------------+
| 8 36 59 | 4 2 39 | 7 1 56 |
| 1 c36 2 | 5 7 8 | 49 b39 d46 |
| 4 7 59 | 39 6 1 | 58 358 2 |
+-----------+-------------+-------------+
| 6 2 47 | 3789 89 39 | 1 x58 e45 |
| 5 8 17 | 17 4 2 | 3 6 9 |
| 3 9 14 | 18 5 6 | 48 2 7 |
+-----------+-------------+-------------+

Quote:

XmasY chain abcde gives prancers of <5> in a + e to remove <5> from x

Nadolig Llawen

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