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complicated puzzle II

 
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Ajò Dimonios



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

PostPosted: Tue Jul 04, 2017 10:17 pm    Post subject: complicated puzzle II Reply with quote

Hi everyone

Code:

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

Play this puzzle online at the Daily Sudoku site

Ciao a tutti
Paolo
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JC Van Hay



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

PostPosted: Wed Jul 05, 2017 9:00 pm    Post subject: Reply with quote

Basics :
9 singles
N-tuples{(36)r56c8; (58)r39c2} -> -{(36)r4c78, (36)r12c8, 3r79c8; (3679)r39c2}
N-Fishes{7B9; 7C1; 9C25} -> -{7r7c13; 7r13c23; 9r9c3, 9r8c6}

Code:
+-----------------------+--------------------+--------------------+
| (367)  (369)  (2369)  | 1      36-9  5     | (23469)  479   8   |
| 1      4      359(26) | (369)  7     8     | 39(26)   59    35  |
| (367)  58     56893   | 4      2     (369) | 369      1     357 |
+-----------------------+--------------------+--------------------+
| 9      (36)   1       | 5      (36)  7     | (48)     48    2   |
| 5      2      4       | 6(39)  8     (369) | 7        36    1   |
| 8      367    367     | 2      1     4     | 5        36    9   |
+-----------------------+--------------------+--------------------+
| 6(3)   1      35689   | 6(39)  4     2     | (389)    5789  357 |
| 4      37(9)  379     | 8      5     (13)  | (139)    2     6   |
| 2      58     3568    | 7      369   1369  | 1389     589   4   |
+-----------------------+--------------------+--------------------+
9r1c5 -> r8c2=9 and NT(367)r1c12.r3c1, r1c3=r2c7=2, r2c4=6, r3c6=3, r8c6=1; r8c7=3; {3C14R4} -> r1c2=r4c5=6, r5c6=r7c4=9 and r1c7=4, r4c7=8; r7c7={} -> r9c5=9; SSTS to the end :

NP(36)r7c14 -> -{3r7c379, 6r7c3}; 1-Fish{3C9} -> -{3r123c7}
XY-Wing(598)r29c8.r7c7 -> -{9r123c7, 9r7c8}; 7 singles
2-Fish{6R29} -> -{2r7c4}; 8 singles
2-Fish{5R29} -> -{5r3c2, 5r7c3}; 4 singles
XY-Win(579)r3c393r1c8 -> -{9r1c2}; stte
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