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VH+ 062321

 
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immpy



Joined: 06 May 2017
Posts: 574
PostPosted: Wed Jun 23, 2021 8:27 pm    Post subject: VH+ 062321 Reply with quote
Hello all, enjoy the puzzle...

Code:

+-------+-------+-------+
| 3 . . | . . 4 | . . . |
| . . . | 7 . 3 | . 9 . |
| . . 4 | . . . | . 1 7 |
+-------+-------+-------+
| . . . | . 1 . | . 8 5 |
| . . 6 | 4 . 2 | 9 . . |
| 8 2 . | . 5 . | . . . |
+-------+-------+-------+
| 7 5 . | . . . | 4 . . |
| . 4 . | 8 . 9 | . . . |
| . . . | 2 . . | . . 9 |
+-------+-------+-------+

Play this puzzle online at the Daily Sudoku site

cheers...immp
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TomC



Joined: 30 Oct 2020
Posts: 359
Location: Wales
PostPosted: Thu Jun 24, 2021 8:00 am    Post subject: Reply with quote
Code:

+-------------+-------+-------------+
| 3  7   58   | 1 9 4 | 568 56  2   |
| 12 18  1258 | 7 6 3 | 58  9   4   |
| 9  6   4    | 5 2 8 | 3   1   7   |
+-------------+-------+-------------+
| 4  9   7    | 3 1 6 | 2   8   5   |
| 5  13  6    | 4 8 2 | 9   7   13  |
| 8  2   13   | 9 5 7 | 16  4   136 |
+-------------+-------+-------------+
| 7  5   9    | 6 3 1 | 4   2   8   |
| 26 4   23   | 8 7 9 | 156 356 16  |
| 16 138 138  | 2 4 5 | 7   36  9   |
+-------------+-------+-------------+

Play this puzzle online at the Daily Sudoku site

Good Puzzle

Quote:
Using the cells in r1c38 and r9c38 makes r9c2 <> 3 as then no 8's in box 7 or two 3's in row 9


Tom
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Mogulmeister



Joined: 03 May 2007
Posts: 1151
PostPosted: Thu Jun 24, 2021 10:03 am    Post subject: Reply with quote
Code:

+-------------+-------+-------------+
| 3  7   58c  | 1 9 4 | 568 56d  2  |
| 12 18b 1258 | 7 6 3 | 58  9   4   |
| 9  6   4    | 5 2 8 | 3   1   7   |
+-------------+-------+-------------+
| 4  9   7    | 3 1 6 | 2   8   5   |
| 5  13a 6    | 4 8 2 | 9   7   13  |
| 8  2   13   | 9 5 7 | 16  4   136 |
+-------------+-------+-------------+
| 7  5   9    | 6 3 1 | 4   2   8   |
| 26 4   23   | 8 7 9 | 156 356 16  |
| 16 138 138  | 2 4 5 | 7   36e  9  |
+-------------+-------+-------------+
 


Good Puzzle Immpy!

Quote:
Not quite as elegant as Tom's but a conventional xy chain. Pincers for 3 at a and e remove the 3 in r9c2
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dongrave



Joined: 06 Mar 2014
Posts: 572
PostPosted: Thu Jun 24, 2021 12:39 pm    Post subject: Reply with quote
Starting with TomC's grid I used the following chain:

1r5c2 = r5c9 - (1=6)r8c9 - (6=2)r8c1 - (2=1)r2c1 => r2c2 <> 1; stte.
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immpy



Joined: 06 May 2017
Posts: 574
PostPosted: Thu Jun 24, 2021 6:18 pm    Post subject: Reply with quote
Thank you friends for the comments. Yes, one good XY-chain solves this one. Nicely done.

cheers...immp
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