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VH+ 061117

 
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immpy



Joined: 06 May 2017
Posts: 570

PostPosted: Sun Jun 11, 2017 2:28 pm    Post subject: VH+ 061117 Reply with quote

Enjoy the puzzle........

Code:

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

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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 868
Location: Rimini, Italy

PostPosted: Sun Jun 11, 2017 7:26 pm    Post subject: Reply with quote

Hi immpy,

Code:

+------------+------------+-----------+
| 257 56 26  | 4  3  57   | 8  9  1   |
| 57  8  1   | 57 9  6    | 3  4  2   |
| 34  9  34  | 8  2  1    | 6  7  5   |
+------------+------------+-----------+
| 459 1  49  | 2  6  3    | 79 58 789 |
| 8   56 7   | 9  1  4    | 2  56 3   |
| 39  2  369 | 57 57 8    | 4  1  69  |
+------------+------------+-----------+
| 29  4  8   | 6  57 2579 | 1  3  79  |
| 1   7  29  | 3  4  29   | 5  68 68  |
| 6   3  5   | 1  8  79   | 79 2  4   |
+------------+------------+-----------+

Play this puzzle online at the Daily Sudoku site

I used this option

Quote:
XY-Chain r7c1 2,9 - r7c9 9,7 - r9c7 7,9 - r9c6 9,7 - r1c6 7,5 - r1c2 5,6 - r1c3 6,2 and -2 in r1c1,r8c3.


Ciao Gianni
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Ajò Dimonios



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

PostPosted: Sun Jun 11, 2017 9:12 pm    Post subject: Reply with quote

Hi everyone

Discontinuous nice loop (7)R2C6-(7=5)R2C1-(5=6)R1C2-(6)R1C6=(6)R2C6=>-7 R2C6
Discontinuous nice loop (9)R8C9-(9=6)R6C9-(5=6)R5C8-(5=8)R4C8-(8)R4C9=(8)R8C9=>-9R8C9
Discontinuous nice loop (4-8)R8C9=(8)R4C9-(8=5)R4C8-(5=6)R5C8-(6)R8C8=(6)R8C9=>-4R8C9
Discontinuous nice loop (5)R5C4-(5=6)R5C8-(6=9)R6C9-(9)R6C4=(9)R5C4=>-5R5C4
Discontinuous nice loop (5)R4C2-(5=6)R1C2-(6=1)R2C3-(1)R4C3-(1)R4C2=>-5R4C2
Discontinuous nice loop (1)R5C4-(1=5)R5C5-(5=6)R5C8-(6=9)R6C9-(9)R6C4=(9)R5C4=>-1R5C4
Code:

+-----------+------------+-----------+
| 257 56 26 | 4  3  57   | 8  9  1   |
| 57  8  1  | 57 9  6    | 3  4  2   |
| 4   9  3  | 8  2  1    | 6  7  5   |
+-----------+------------+-----------+
| 59  1  4  | 2  6  3    | 79 58 789 |
| 8   56 7  | 9  1  4    | 2  56 3   |
| 39  2  69 | 57 57 8    | 4  1  69  |
+-----------+------------+-----------+
| 29  4  8  | 6  57 2579 | 1  3  79  |
| 1   7  29 | 3  4  29   | 5  68 68  |
| 6   3  5  | 1  8  79   | 79 2  4   |
+-----------+------------+-----------+

Play this puzzle online at the Daily Sudoku site


Discontinuous nice loop (2)R1C1-(2)R1C3=(2)R8C3-(2)R8C6=(2-5)R7C6=(5-7)R7C5=(7)R6C5-(7)R6C4=(7)R2C4-(7)R1C6=(7)R1C1-(1)R1C1-=>-2R1C1=>stte


Ciao a tutti
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Marty R.



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

PostPosted: Mon Jun 12, 2017 12:37 am    Post subject: Reply with quote

I thought I posted my solution earlier, but I guess not. A senior moment.

Code:

+------------+------------+-----------+
| 257 56 26  | 4  3  57   | 8  9  1   |
| 57  8  1   | 57 9  6    | 3  4  2   |
| 34  9  34  | 8  2  1    | 6  7  5   |
+------------+------------+-----------+
| 459 1  49  | 2  6  3    | 79 58 789 |
| 8   56 7   | 9  1  4    | 2  56 3   |
| 39  2  369 | 57 57 8    | 4  1  69  |
+------------+------------+-----------+
| 29  4  8   | 6  57 2579 | 1  3  79  |
| 1   7  29  | 3  4  29   | 5  68 68  |
| 6   3  5   | 1  8  79   | 79 2  4   |
+------------+------------+-----------+

Play this puzzle online at the Daily Sudoku site

Deadly Pattern (57)
r1c16
r2c14
r6c45
r7c56

29r7c6=2r1c1
29r7c6 forms pair with r6c1=> -9=7r7c9
2r1c1-(2=9)r7c1-(9=7)r7c9=> 7r7c9
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dongrave



Joined: 06 Mar 2014
Posts: 563

PostPosted: Mon Jun 12, 2017 2:09 pm    Post subject: Reply with quote

I enjoy trying to find one step solutions but I'm a REAL amateur so they take me a long time! Someone let me know if my chain is not valid or if the eureka notation is wrong. (It doesn't look right to me.)
5r1c2-r1c6=(5-2)r7c6=r7c1-(257={})r1c1;
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JC Van Hay



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

PostPosted: Mon Jun 12, 2017 2:58 pm    Post subject: Reply with quote

dongrave wrote:
... if the eureka notation is wrong. (It doesn't look right to me.) 5r1c2-r1c6=(5-2)r7c6=r7c1-(257={})r1c1;
5r1c2 -> 7r1c6, 5r7c6, 2r7c1; r1c1={} or in Eureka
Code:
+-----------------+----------------+-------------+
| (257)  6-5  26  | 4   3   (57)   | 8   9   1   |
| 57     8    1   | 57  9   6      | 3   4   2   |
| 34     9    34  | 8   2   1      | 6   7   5   |
+-----------------+----------------+-------------+
| 459    1    49  | 2   6   3      | 79  58  789 |
| 8      56   7   | 9   1   4      | 2   56  3   |
| 39     2    369 | 57  57  8      | 4   1   69  |
+-----------------+----------------+-------------+
| 9(2)   4    8   | 6   57  79(25) | 1   3   79  |
| 1      7    29  | 3   4   29     | 5   68  68  |
| 6      3    5   | 1   8   79     | 79  2   4   |
+-----------------+----------------+-------------+
NP(57)r1c16=2r1c1-2r7c1=(2-5)r7c6=5r1c6 -> 5r1c1==5r1c6 => -5r1c2; stte
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immpy



Joined: 06 May 2017
Posts: 570

PostPosted: Tue Jun 13, 2017 9:02 am    Post subject: Reply with quote

I am terrible with the Eureka notation. My path was the XY Wing (349), with the pivot at r4c3(49) and pincers at r3c3(34) and r6c1(39). This meant that r3c1<>3 and r6c3<>3. This lead to a Finned X-Wing for (9) in rows 4 and 7, columns 1 and 9 with the fin at r6c9. If either the X-Wing OR the fin was true then r4c7<>9. Basics took me home from there.

Really enjoy reading and applying the various solving techniques everyone that posted used. I learn more everyday.

Thank you all.
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