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VH+ 051817

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immpy

Joined: 06 May 2017
Posts: 571

Posted: Thu May 18, 2017 2:45 pm Post subject: VH+ 051817

Enjoy.

Code:

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

Play this puzzle online at the Daily Sudoku site

Ajò Dimonios

Joined: 01 May 2017
Posts: 339
Location: Sassari Italy

Posted: Thu May 18, 2017 3:54 pm Post subject:

Code:

[code]
+------------+----------+--------------+
| 8 59 37 | 2 4 369 | 57 1367 136 |
| 2 1 4 | 7 5 36 | 9 36 8 |
| 59 6 37 | 1 8 39 | 457 347 2 |
+------------+----------+--------------+
| 3 2 1 | 6 9 4 | 8 5 7 |
| 7 4 5 | 8 3 1 | 6 2 9 |
| 6 8 9 | 5 7 2 | 1 34 34 |
+------------+----------+--------------+
| 149 7 6 | 49 2 8 | 3 149 5 |
| 1459 59 2 | 3 6 579 | 47 8 14 |
| 459 3 8 | 49 1 579 | 2 4679 46 |
+------------+----------+--------------+
[/code]
[url=http://www.dailysudoku.com/sudoku/play.shtml?p=8:59:37:2:4:369:57:1367:136:2:1:4:7:5:36:9:36:8:59:6:37:1:8:39:457:347:2:3:2:1:6:9:4:8:5:7:7:4:5:8:3:1:6:2:9:6:8:9:5:7:2:1:34:34:149:7:6:49:2:8:3:149:5:1459:59:2:3:6:579:47:8:14:459:3:8:49:1:579:2:4679:46:]Play this puzzle online[/url] at the Daily Sudoku site

R3C7=4 produces contradiction (two 7 in line 8, cells r8c6 and r8c7) then R3C7<>4.
Solution with basics strategies.

JC Van Hay

Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium

Posted: Thu May 18, 2017 4:55 pm Post subject:

Code:

+----------------+-------------+-----------------+
| 8 9(5) 37 | 2 4 369 | (57) 1367 136 |
| 2 1 4 | 7 5 36 | 9 36 8 |
| 59 6 37 | 1 8 39 | 457 347 2 |
+----------------+-------------+-----------------+
| 3 2 1 | 6 9 4 | 8 5 7 |
| 7 4 5 | 8 3 1 | 6 2 9 |
| 6 8 9 | 5 7 2 | 1 34 34 |
+----------------+-------------+-----------------+
| 14 7 6 | 49 2 8 | 3 149 5 |
| 1459 9(5) 2 | 3 6 (57) | 4-7 8 14 |
| 45 3 8 | 49 1 57 | 2 4679 46 |
+----------------+-------------+-----------------+

WWing(57)r1c7.r8c6,5C2 - (7=4)r8c7; stte

Marty R.

Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

Posted: Thu May 18, 2017 11:59 pm Post subject:

Code:

+------------+----------+--------------+
| 8 59 37 | 2 4 369 | 57 1367 136 |
| 2 1 4 | 7 5 36 | 9 36 8 |
| 59 6 37 | 1 8 39 | 457 347 2 |
+------------+----------+--------------+
| 3 2 1 | 6 9 4 | 8 5 7 |
| 7 4 5 | 8 3 1 | 6 2 9 |
| 6 8 9 | 5 7 2 | 1 34 34 |
+------------+----------+--------------+
| 14 7 6 | 49 2 8 | 3 149 5 |
| 1459 59 2 | 3 6 57 | 47 8 14 |
| 45 3 8 | 49 1 57 | 2 4679 46 |
+------------+----------+--------------+

Play this puzzle online at the Daily Sudoku site

XY-Chain (7=5)r8c6-(5=9)r8c2-(9=5)r1c2-(5=7)r1c7=> -7r8c7

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