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		| immpy 
 
 
 Joined: 06 May 2017
 Posts: 574
 
 
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				|  Posted: Tue Aug 01, 2017 4:59 pm    Post subject: VH+080117 |   |  
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				| This one was interesting....enjoy. 
 
  	  | Code: |  	  | +-------+-------+-------+
 | 4 6 . | . . . | . . . |
 | . . 9 | 1 . 3 | 6 . . |
 | . . 5 | . . 6 | . 4 . |
 +-------+-------+-------+
 | . . 3 | 6 . . | . 1 . |
 | . 7 . | . 2 . | . 8 . |
 | . 5 . | . . 7 | 9 . . |
 +-------+-------+-------+
 | . 4 . | 5 . . | 8 . . |
 | . . 6 | 8 . 9 | 1 . . |
 | . . . | . . . | . 3 5 |
 +-------+-------+-------+
 
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 Play this puzzle online at the Daily Sudoku site
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		| JC Van Hay 
 
 
 Joined: 13 Jun 2010
 Posts: 494
 Location: Charleroi, Belgium
 
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				|  Posted: Tue Aug 01, 2017 7:01 pm    Post subject: |   |  
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				|  	  | Code: |  	  | +---------------------+---------------------+------------------+ | 4     6        128  | 279    5789   258   | 3     279   1289 |
 | 7     28       9    | 1      4      3     | 6     5     28   |
 | 1238  28-3(1)  5    | 279    789    6     | 27    4     1289 |
 +---------------------+---------------------+------------------+
 | 289   28(9)    3    | 6      58(9)  458   | 45    1     7    |
 | 69    7        14   | (39)   2      145   | 45    8     36   |
 | 168   5        148  | (34)   18     7     | 9     26    236  |
 +---------------------+---------------------+------------------+
 | 123   4        127  | 5      137    12    | 8     69    69   |
 | 5     (23)     6    | 8      37     9     | 1     7(2)  4    |
 | 1289  28(19)   1278 | 27(4)  6      (124) | 7(2)  3     5    |
 +---------------------+---------------------+------------------+
 3r8c2 2r8c2
 2r8c8 2r9c7
 2r9c6 1r9c6 4r9c6
 4r9c4 4r6c4
 3r6c4 3r5c4
 9r5c4 9r4c5
 9r9c2                   9r4c2
 1r9c2                         1r3c2-> [3r8c2==1r3c2] => -3r3c2; stte
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		| Ajò Dimonios 
 
 
 Joined: 01 May 2017
 Posts: 339
 Location: Sassari Italy
 
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				|  Posted: Wed Aug 02, 2017 1:31 pm    Post subject: |   |  
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				| Hi everyone 
 
  	  | Code: |  	  | +-----------------+--------------+------------------+
 | 4     6    1278 | 279 5789 258 | 3    2579 123789 |
 | 7     28   9    | 1   4    3   | 6    5    278    |
 | 12378 1238 5    | 279 789  6   | 27   4    123789 |
 +-----------------+--------------+------------------+
 | 289   289  3    | 6   4589 458 | 2457 1    7      |
 | 169   7    14   | 349 2    145 | 345  8    346    |
 | 1268  5    1248 | 34  138  7   | 9    26   236    |
 +-----------------+--------------+------------------+
 | 12379 4    127  | 5   137  12  | 8    2679 269    |
 | 5     23   6    | 8   37   9   | 1    27   4      |
 | 12789 1289 1278 | 247 6    124 | 27   3    5      |
 +-----------------+--------------+------------------+
 
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 Play this puzzle online at the Daily Sudoku site
 
 My solution with one step after basics
 [(7)R3C7-(7=2)R9C7-(2)R9C4C6=(2)R7C6-(2)R7C3;
 (7)R3C7-(7)R9C7=(7)R8C8-(7=3)R8C5-(3)R8C2=(3-1)R3C2=(1)R9C2-(1=7)R7C3;
 (7)R3C7-(7)R9C7=(7)R8C8-(7=3)R8C5-(3)R7C5;
 (7)R3C7-(7)R9C7=(7-2)R8C8=(2-3)R8C2=(3-1)R3C2=(1)R9C2-(1)R9C6=(247)R9C467-(2=1)R7C6-(1=7)R7C5;]=>contradiction two 7 in line 7  (R7C3, R7C5)=>-7R3C7=> solution stte.
 
 Ciao a Tutti
 Paolo
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		| JC Van Hay 
 
 
 Joined: 13 Jun 2010
 Posts: 494
 Location: Charleroi, Belgium
 
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				|  Posted: Wed Aug 02, 2017 3:12 pm    Post subject: |   |  
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				| Hi Paolo, 
 "...=(247)R9C467-(2=1)R7C6-(1=7)R7C5 ..." ???
 
 JC
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		| Ajò Dimonios 
 
 
 Joined: 01 May 2017
 Posts: 339
 Location: Sassari Italy
 
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				|  Posted: Wed Aug 02, 2017 8:11 pm    Post subject: |   |  
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				| Hi everyone Sorry I made a mistake in the last chain.
 
 You can replace the last two chains with
 
 (7)R3C7-(7)R1C8=(7)R8C8-(7=3)R8C5-(3=2)R8C2-(2)R234C2=(2)R4C1-(2)R3C1=(2)R1C3-(2)R1C48=(9)R1C8-(9)R1C4=(7)R1C4-(7) R9C4=(7)R7C5;
 
 that together with the first two chains
 
 (7)R3C7-(7=2)R9C7-(2)R9C4C6=(2)R7C6-(2)R7C3;
 (7)R3C7-(7)R9C7=(7)R8C8-(7=3)R8C5-(3)R8C2=(3-1)R3C2=(1)R9C2-(1=7)R7C3; =>-7R3C7=> solution stte.
 
 
 Ciao a Tutti
 Paolo
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