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Jul 20 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 1113
Location: Dar es Salaam Tanzania
PostPosted: Wed Jul 19, 2017 10:01 pm    Post subject: Jul 20 VH Reply with quote
Code:

+----------------+---------------------+-------------------+
| 23     7     9 |    4       12    8  |    13    5    6   |
| 1     b26    8 |   a26      5     3  |    7     9    4   |
| 4      36    5 |    7       1-6   9  |    13    2    8   |
+----------------+---------------------+-------------------+
| 35     4     6 |    39      8     1  |    2     7    359 |
| 8     c23    7 |    239-6  d26    45 |    46    1    359 |
| 235    9     1 |    23-6    7     45 |    46    8    35  |
+----------------+---------------------+-------------------+
| 6      8     2 |    5       3     7  |    9     4    1   |
| 7      1     4 |    8       9     6  |    5     3    2   |
| 9      5     3 |    1       4     2  |    8     6    7   |
+----------------+---------------------+-------------------+

W-Wing: (6=2)r2c4 - r2c2 = r5c2 - (2=6)r5c5 => - 6 r56c4, r3c5; stte
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 1019
Location: Rimini, Italy
PostPosted: Wed Jul 19, 2017 10:16 pm    Post subject: Reply with quote
Hi everyone,

other possible solutions

Quote:
Skyscraper with number 2 in r2c2, r5c2, r5c5, r1c5 and -2 in r1c1 and r2c4.
W-Wing 2,3 in r1c1, r5c2 connected by number 2 in r15c5 and -3 in r3c2, r4c1, r6c1.
XY-Wing 2,3,6 in r3c2, r5c2, r5c5 and -6 in r3c5.


Ciao Gianni
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Ajò Dimonios



Joined: 01 May 2017
Posts: 339
Location: Sassari Italy
PostPosted: Thu Jul 20, 2017 1:29 pm    Post subject: Reply with quote
Hi everyone
Solutions with one step .
[(2)R6C4-(2=6)R2C4 and (2)R6C4-(2)R6C1=(2)R1C1-(2=6)R2C2]=>contradiction, two singles 6 in line 2=>-2R6C4=>solution stte.

Ciao a tutti
Paolo
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Ajò Dimonios



Joined: 01 May 2017
Posts: 339
Location: Sassari Italy
PostPosted: Thu Jul 20, 2017 7:48 pm    Post subject: Reply with quote
Hi everyone

Others solutions with one step .

1) [(2-3)R1C1=(3)R3C2-(3)R5C2 and (2)R1C1-(2)R1C6=(2)R5C5-(2)R5C2]=>contradiction, 2R5C2=Ø=>-2R1C1=>solution stte.
2) [(2-6)R2C4=(6)R3C5-(6)R5C5 and (2)R2C4-(2)R2C2=(2)R5C2-(2)R5C5]=>contradiction, R5C5=Ø=>-2R2C4=>solution stte.

Ciao a tutti
Paolo
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