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ZeroAssoluto
Joined: 05 Feb 2017 Posts: 933 Location: Rimini, Italy
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Posted: Wed Jul 27, 2022 9:05 am Post subject: Jul 27 VH |
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Hi everyone,
Code: |
+------------+------------+------------+
| 128 125 28 | 245 259 7 | 459 3 6 |
| 9 6 3 | 8 1 45 | 2 45 7 |
| 4 25 7 | 6 259 3 | 8 1 59 |
+------------+------------+------------+
| 23 8 9 | 1 6 45 | 7 25 34 |
| 236 27 5 | 47 8 9 | 1 26 34 |
| 16 17 4 | 57 3 2 | 569 8 59 |
+------------+------------+------------+
| 58 9 68 | 3 45 1 | 456 7 2 |
| 25 4 1 | 25 7 6 | 3 9 8 |
| 7 3 26 | 9 245 8 | 456 456 1 |
+------------+------------+------------+
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Play this puzzle online at the Daily Sudoku site
Quote: | XYZ-Wing 2,3,6 in r4c1,r5c18 and -2 in r5c2 |
Ciao Gianni |
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TomC
Joined: 30 Oct 2020 Posts: 358 Location: Wales
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Posted: Wed Jul 27, 2022 9:28 am Post subject: Another way |
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XY chain abcd shows that if a=3 then d=4 OR if d=7 then a=4
So either a or d must be <4>
Pincers for <4> in a + d give -4 in r5c9 to solve (edit: and of course -4 in r4c6 as well)
Code: |
+---------------+---------------+--------------+
| 128 125 28 | 245 259 7 | 459 3 6 |
| 9 6 3 | 8 1 45 | 2 45 7 |
| 4 25 7 | 6 259 3 | 8 1 59 |
+---------------+---------------+--------------+
| b23 8 9 | 1 6 -45 | 7 25 a34 |
| 236 c27 5 | d47 8 9 | 1 26 -43 |
| 16 17 4 | 57 3 2 | 569 8 59 |
+---------------+---------------+--------------+
| 58 9 68 | 3 45 1 | 456 7 2 |
| 25 4 1 | 25 7 6 | 3 9 8 |
| 7 3 26 | 9 245 8 | 456 456 1 |
+---------------+---------------+--------------+
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Last edited by TomC on Fri Jul 29, 2022 7:23 am; edited 1 time in total |
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TomC
Joined: 30 Oct 2020 Posts: 358 Location: Wales
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Posted: Wed Jul 27, 2022 10:55 am Post subject: and another ... |
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Or you could have -6 in r9c8 to avoid the <45> UR in r79c57 |
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