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immpy
Joined: 06 May 2017
Posts: 574
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 Posted: Mon Jan 04, 2021 6:40 pm Post subject: Extreme 010421 |
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Hello all, enjoy the puzzle. Thinking one step would not be enough here. But I have been wrong before...
| Code: |
+-------+-------+-------+
| . . 5 | . . . | . . . |
| . . 6 | . 5 . | . 1 . |
| . 9 7 | 2 . 3 | . . . |
+-------+-------+-------+
| . 6 . | . . . | 1 2 . |
| . . 2 | 3 . 6 | 9 . . |
| . 8 3 | . . . | . 6 . |
+-------+-------+-------+
| . . . | 9 . 8 | 2 3 . |
| . 5 . | . 1 . | 4 . . |
| . . . | . . . | 8 . . |
+-------+-------+-------+
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Play this puzzle online at the Daily Sudoku site
cheers...immp |
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TomC
Joined: 30 Oct 2020
Posts: 359
Location: Wales
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| Posted: Thu Jan 07, 2021 4:02 pm Post subject: |
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| Code: |
+-------------+---------------+-----------+
| 248 234 5 | 16 679 179 | 37 48 29 |
| 248 234 6 | 48 5 79 | 37 1 29 |
| 1 9 7 | 2 48 3 | 6 5 48 |
+-------------+---------------+-----------+
| 479 6 49 | 458 4789 4579 | 1 2 3 |
| 5 1 2 | 3 478 6 | 9 48 478 |
| 479 8 3 | 14 2 1479 | 5 6 47 |
+-------------+---------------+-----------+
| 46 7 1 | 9 46 8 | 2 3 5 |
| 3 5 8 | 7 1 2 | 4 9 6 |
| 2469 24 49 | 456 3 45 | 8 7 1 |
+-------------+---------------+-----------+
|
Play this puzzle online at the Daily Sudoku site
After basics eliminate the 6 in r9c4 because then r7c5 = 4 and r6c4 = 4 so no 4's in box 2
Then gets you to
| Code: |
+---------+------------+-----------+
| 28 34 5 | 6 79 1 | 37 48 29 |
| 28 34 6 | 48 5 79 | 37 1 29 |
| 1 9 7 | 2 48 3 | 6 5 48 |
+---------+------------+-----------+
| 79 6 4 | 58 789 579 | 1 2 3 |
| 5 1 2 | 3 478 6 | 9 48 478 |
| 79 8 3 | 1 2 479 | 5 6 47 |
+---------+------------+-----------+
| 4 7 1 | 9 6 8 | 2 3 5 |
| 3 5 8 | 7 1 2 | 4 9 6 |
| 6 2 9 | 45 3 45 | 8 7 1 |
+---------+------------+-----------+
|
Play this puzzle online at the Daily Sudoku site
eliminate 4 from r5c5 using pair of 48's in r3 - no 4's in box 6
Tom |
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dongrave
Joined: 06 Mar 2014
Posts: 572
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| Posted: Thu Jan 07, 2021 6:38 pm Post subject: |
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Note that you can remove the 8 from r5c5 of Tom's initial grid due to the locked candidates in box 6. (Warning: The following solution is not pretty!)
4r3c9 - [(4=7*)r6c9 -r3c5] = 4*r2c4 - (4=1*)r6c4 - (1=6)r1c4 - (4*6=5)r9c4 - (5=4)r9c6 - (1*47*=9)r6c6 - (7*9=4)r6c1 - r4c3 = r9c3 contradiction (i.e. 4r9c36) => r3c9 <> 4; stte. |
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immpy
Joined: 06 May 2017
Posts: 574
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| Posted: Fri Jan 08, 2021 8:20 pm Post subject: |
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Heh heh, lots of stuff in this one. Even spotted a pair of Jellyfish, one finned and one regular. Can be bypassed of course.
cheers...immp |
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