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Feb 20 VH

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ZeroAssoluto

Joined: 05 Feb 2017
Posts: 872
Location: Rimini, Italy

Posted: Mon Feb 20, 2023 10:09 am Post subject: Feb 20 VH

Hi everyone,

Code:

+-----------+---------+-------------+
| 1 3 5 | 2 48 6 | 78 478 9 |
| 26 9 7 | 3 48 5 | 26 1 48 |
| 8 24 46 | 9 1 7 | 3 26 5 |
+-----------+---------+-------------+
| 5 1 28 | 7 23 4 | 9 238 6 |
| 27 78 9 | 6 5 38 | 1 2348 48 |
| 4 6 3 | 1 29 89 | 258 258 7 |
+-----------+---------+-------------+
| 269 25 1 | 4 7 29 | 568 568 3 |
| 237 78 28 | 5 6 23 | 4 9 1 |
| 39 45 46 | 8 39 1 | 567 567 2 |
+-----------+---------+-------------+

Play this puzzle online at the Daily Sudoku site

Quote:

XY-Wing 2,3,8 in r4c35,r5c6 and -8 in r5c2
Skyscraper with number 2 in r2c7,r5c8 SL in r25c1 and -2 in r3c8,r6c7
Skyscraper with number 2 in r3c2,r5c1 SL in r35c8 and -2 in r2c1
2 String Kite with number 2 in r2c7,r5c1 SL in r5c8,r6c7 and -2 in r2c1
W-Wing 2,6 in r2c1,r3c8 SL with number 2 in r5c18 and -6 in r2c7,r3c3
W-Wing 2,3 in r4c5,r8c6 SL with number 2 in r48c3 and -3 in r5c6,r9c5

Ciao Gianni

TomC

Joined: 30 Oct 2020
Posts: 349
Location: Wales

Posted: Mon Feb 20, 2023 11:47 am Post subject:

Remove <2> from r5c8 to solve

Code:

+-------------+-------------+--------------+
| 1 3 5 | 2 48 6 | 78 478 9 |
| 26 9 7 | 3 48 5 | 26 1 48 |
| 8 24 46 | 9 1 7 | 3 26 5 |
+-------------+-------------+--------------+
| 5 1 -28 | 7 b23 4 | 9 238 6 |
| -27 78 9 | 6 5 a38 | 1 x2348 48 |
| 4 6 3 | 1 29 89 | 258 258 7 |
+-------------+-------------+--------------+
| 269 25 1 | 4 7 29 | 568 568 3 |
| 237 78 28 | 5 6 23 | 4 9 1 |
| 39 45 46 | 8 39 1 | 567 567 2 |
+-------------+-------------+--------------+

Quote:

If x=2, a=3, b=2 leads to no <2> in box 4

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