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immpy
Joined: 06 May 2017
Posts: 571
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 Posted: Fri Sep 21, 2018 1:40 am Post subject: Advanced 092018 |
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I had my breakthrough moment with this puzzle. Enjoy all...
| Code: |
+-------+-------+-------+
| 5 4 . | . . . | . 6 3 |
| 3 . . | . . . | 9 . 2 |
| 6 . 2 | . . 9 | . . . |
+-------+-------+-------+
| . . . | 8 2 . | . . 1 |
| . . . | 3 . 4 | . . . |
| 2 . . | . 7 5 | . . . |
+-------+-------+-------+
| . . . | 7 . . | 2 . 4 |
| 4 . 3 | . . . | . . 5 |
| 7 5 . | . . . | . 1 6 |
+-------+-------+-------+
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Play this puzzle online at the Daily Sudoku site
cheers...immp |
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ZeroAssoluto
Joined: 05 Feb 2017
Posts: 942
Location: Rimini, Italy
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| Posted: Fri Sep 21, 2018 12:20 pm Post subject: |
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Hi everyone,
| Code: |
+-----------+------------+--------------+
| 5 4 9 | 2 18 7 | 18 6 3 |
| 3 178 17 | 456 46 18 | 9 45 2 |
| 6 18 2 | 45 3 9 | 1458 457 78 |
+-----------+------------+--------------+
| 9 37 457 | 8 2 6 | 45 3457 1 |
| 8 167 157 | 3 19 4 | 56 2 79 |
| 2 136 14 | 19 7 5 | 468 34 89 |
+-----------+------------+--------------+
| 1 9 6 | 7 5 3 | 2 8 4 |
| 4 2 3 | 16 168 18 | 7 9 5 |
| 7 5 8 | 49 49 2 | 3 1 6 |
+-----------+------------+--------------+
|
Play this puzzle online at the Daily Sudoku site
1-XY-Chain r1c7-8-r3c9-7-r5c9-9-r5c5 and -1 in r1c5
| Code: |
+---------+----------+------------+
| 5 4 9 | 2 8 7 | 1 6 3 |
| 3 8 7 | 456 46 1 | 9 45 2 |
| 6 1 2 | 45 3 9 | 48 457 78 |
+---------+----------+------------+
| 9 37 45 | 8 2 6 | 45 37 1 |
| 8 67 15 | 3 19 4 | 56 2 79 |
| 2 36 14 | 19 7 5 | 468 34 89 |
+---------+----------+------------+
| 1 9 6 | 7 5 3 | 2 8 4 |
| 4 2 3 | 16 16 8 | 7 9 5 |
| 7 5 8 | 49 49 2 | 3 1 6 |
+---------+----------+------------+
|
Play this puzzle online at the Daily Sudoku site
2-UR with 4,5 in r23c48 and -5 in r2c4,r3c8
| Code: |
+---------+---------+-----------+
| 5 4 9 | 2 8 7 | 1 6 3 |
| 3 8 7 | 46 46 1 | 9 5 2 |
| 6 1 2 | 5 3 9 | 48 47 78 |
+---------+---------+-----------+
| 9 37 45 | 8 2 6 | 45 37 1 |
| 8 67 15 | 3 19 4 | 56 2 79 |
| 2 36 14 | 19 7 5 | 468 34 89 |
+---------+---------+-----------+
| 1 9 6 | 7 5 3 | 2 8 4 |
| 4 2 3 | 16 16 8 | 7 9 5 |
| 7 5 8 | 49 49 2 | 3 1 6 |
+---------+---------+-----------+
|
Play this puzzle online at the Daily Sudoku site
3-BUG+1 in r6c7=4
Ciao Gianni |
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immpy
Joined: 06 May 2017
Posts: 571
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| Posted: Fri Sep 21, 2018 5:43 pm Post subject: |
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Indeed yes, I have conquered chains and loops...FINALLY! I followed the precise path of Gianni on this one; that XY-Chain is the key, it seems, to solving this one. The UR is a Type 6, which results in two eliminations AND two placements (5). And the BUG+1 is a nice ending technique.
This puzzle will always remain special for me in that I was able to implement a chain as a means of solving for the first time ever.
Hope all who tried it enjoyed the puzzle.
cheers...immp |
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Clement
Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
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| Posted: Fri Sep 21, 2018 7:50 pm Post subject: Advanced 092018 |
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I settled with two chains | Code: |
+-------------------+---------------------+-----------------------+
| 5 4 9 | 2 a18 7 | 1-8 6 3 |
| 3 178 17 | 456 46 18 | 9 45 2 |
| 6 18 2 | 45 3 9 | 1458 457 d78 |
+-------------------+---------------------+-----------------------+
| 9 37 457 | 8 2 6 | 45 3457 1 |
| 8 167 157 | 3 b19 4 | 56 2 c79 |
| 2 136 14 | 19 7 5 | 468 34 89 |
+-------------------+---------------------+-----------------------+
| 1 9 6 | 7 5 3 | 2 8 4 |
| 4 2 3 | 16 168 18 | 7 9 5 |
| 7 5 8 | 49 49 2 | 3 1 6 |
+-------------------+---------------------+-----------------------+
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(1): (8=1)r1c5 - (1=9)r5c5 - (9=7)r5c9 - (7=8)r3c9 => - 8r1c7
| Code: |
+------------------+------------------+--------------------+
| 5 4 9 | 2 8 7 | 1 6 3 |
| 3 8 7 | 456 46 1 | 9 45 2 |
| 6 1 2 | 45 3 9 | 48 457 78 |
+------------------+------------------+--------------------+
| 9 37 f45 | 8 2 6 |e45 37 1 |
| 8 67 15 | 3 19 4 |d56 2 79 |
| 2 b36 1-4| 19 7 5 |c468 a34 89 |
+------------------+------------------+--------------------+
| 1 9 6 | 7 5 3 | 2 8 4 |
| 4 2 3 | 16 16 8 | 7 9 5 |
| 7 5 8 | 49 49 2 | 3 1 6 |
+------------------+------------------+--------------------+
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(2): (4=3)r6c8 - (3=6)r6c2 - r6c7 = (6-5)r5c7 = r4c7 - (5=4)r4c3 => - 4r6c3; stte |
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Ajò Dimonios
Joined: 01 May 2017
Posts: 339
Location: Sassari Italy
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| Posted: Mon Sep 24, 2018 8:25 am Post subject: |
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Hi everyone.
| Code: |
+-----------+------------+--------------+
| 5 4 9 | 2 18 7 | 18 6 3 |
| 3 178 17 | 456 46 18 | 9 45 2 |
| 6 18 2 | 45 3 9 | 1458 457 78 |
+-----------+------------+--------------+
| 9 37 457 | 8 2 6 | 45 3457 1 |
| 8 167 157 | 3 19 4 | 56 2 79 |
| 2 136 14 | 19 7 5 | 468 34 89 |
+-----------+------------+--------------+
| 1 9 6 | 7 5 3 | 2 8 4 |
| 4 2 3 | 16 168 18 | 7 9 5 |
| 7 5 8 | 49 49 2 | 3 1 6 |
+-----------+------------+--------------+
|
Play this puzzle online at the Daily Sudoku site
One step after basics
(8-7)R3C9=7R5C9-7R5C2; 8R3C9-8R6C9=(8-6)R6C7=6R5C7-6R5C2 and 8R3C9-(8=1)R3C2-1R5C2=>R5C2=Ø=>-8R3C9=>solution.
Ciao a Tutti
Paolo |
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immpy
Joined: 06 May 2017
Posts: 571
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| Posted: Tue Sep 25, 2018 12:48 pm Post subject: |
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King of the one-steppers...Paolo! Well done. Ciao a Tutti indeed.
cheers...immp |
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