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Ajò Dimonios
Joined: 01 May 2017 Posts: 339 Location: Sassari Italy
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Posted: Thu Aug 31, 2017 4:15 pm Post subject: very hard VIIi |
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Hi everyone
Code: |
+-------+-------+-------+
| . . . | 7 8 . | . 2 5 |
| 7 . . | . . . | . . 4 |
| 2 8 . | . 1 . | 3 . . |
+-------+-------+-------+
| . 6 . | 2 9 . | . . . |
| . . . | 5 3 4 | . . . |
| . . . | . 7 6 | . 5 . |
+-------+-------+-------+
| . . 3 | . 4 . | . 9 2 |
| 8 . . | . . . | . . 1 |
| 9 1 . | . 2 7 | . . . |
+-------+-------+-------+
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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
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Posted: Thu Aug 31, 2017 7:59 pm Post subject: |
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3 singles; HP(18)r47c6; LC(5B8, 6B2)
Code: | +-----------------------+----------------+-----------------------+
| -6(34) 9(34) 169(4) | 7 8 9(3) | 169 2 5 |
| 7 9(35) (159) | 369 56 2 | 189 8(1) 4 |
| 2 8 (569) | 4 1 59 | 3 67 679 |
+-----------------------+----------------+-----------------------+
| 345 6 4578 | 2 9 18 | 1478 478(13) 378 |
| 1 279 2789 | 5 3 4 | 26789 678 6789 |
| 34 2349 2489 | 18 7 6 | 12489 5 389 |
+-----------------------+----------------+-----------------------+
| (56) 7(5) 3 | 168 4 18 | 5678 9 2 |
| 8 247 2467 | 369 56 59(3) | 467 467(3) 1 |
| 9 1 6(45) | 368 2 7 | 68(45) 68(34) 368 |
+-----------------------+----------------+-----------------------+
6r7c1 5r7c1
5r7c2 5r2c2
3r1c1 3r2c2 3r1c2
3r1c6 3r8c6
4r1c1 4r1c2 4r1c3
5r9c3 5r9c7
4r9c3 4r9c7 4r9c8
3r8c8 3r9c8 3r4c8
1r4c8 1r2c8
5r2c3 1r2c3 9r2c3
5r3c3 9r3c3 6r3c3 -> (34)r1c1==6r7c1==6r3c3 => -6r1c1 | 2 singles; LC(3B4, 6B1), NP(18)r7c46, HP(16)r1c37
Code: | +-----------------+-----------------+-----------------------+
| 34 349 16 | 7 8 39 | 16 2 5 |
| 7 39(5) 159 | 369 6-5 2 | 1(89) (18) 4 |
| 2 8 569 | 4 1 (59) | 3 67 67(9) |
+-----------------+-----------------+-----------------------+
| 5 6 478 | 2 9 18 | 1478 378(14) 378 |
| 1 279 2789 | 5 3 4 | 26789 678 6789 |
| 34 2349 2489 | 18 7 6 | 12489 5 89 |
+-----------------+-----------------+-----------------------+
| 6 7(5) 3 | 18 4 18 | (57) 9 2 |
| 8 247 247 | 369 (56) 359 | (467) 367(4) 1 |
| 9 1 45 | 36 2 7 | 4568 368(4) 368 |
+-----------------+-----------------+-----------------------+
5r2c2 5r7c2
5r7c7 7r7c7
7r8c7 6r8c7 4r8c7
5r8c5 6r8c5
4r89c8 4r4c8
1r4c8 1r2c8
8r2c8 8r2c7
9r2c7 9r3c9
9r3c6 5r3c6 -> 5r2c2==5r8c5==5r3c6 => -5r2c5 | 3 singles
Code: | +-------------------+---------------+----------------------+
| 34 349 16 | 7 8 9(3) | 16 2 5 |
| 7 9(35) 9-1(5) | 9(3) 6 2 | 189 8(1) 4 |
| 2 8 69 | 4 1 5 | 3 67 679 |
+-------------------+---------------+----------------------+
| 5 6 478 | 2 9 18 | 1478 78(134) 378 |
| 1 279 2789 | 5 3 4 | 26789 678 6789 |
| 34 2349 2489 | 18 7 6 | 12489 5 89 |
+-------------------+---------------+----------------------+
| 6 57 3 | 18 4 18 | 57 9 2 |
| 8 27(4) 27(4) | 369 5 9(3) | 467 67(34) 1 |
| 9 1 (45) | 36 2 7 | 4568 68(34) 368 |
+-------------------+---------------+----------------------+
5r2c3 5r9c3
4r9c3 4r8c23
5r7c2 5r2c2
3r2c2 3r2c4
3r1c6 3r8c6
4r8c8 4r9c8 4r4c8
3r8c8 3r9c8 3r4c8
1r4c8 1r2c8 -> 5r2c3==1r2c8 => -1r2c3; stte |
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Ajò Dimonios
Joined: 01 May 2017 Posts: 339 Location: Sassari Italy
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Posted: Thu Aug 31, 2017 9:59 pm Post subject: |
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Hi everyone
Code: |
+---------------+------------+------------------+
| 346 349 1469 | 7 8 39 | 169 2 5 |
| 7 359 159 | 369 56 2 | 189 18 4 |
| 2 8 569 | 4 1 59 | 3 67 679 |
+---------------+------------+------------------+
| 345 6 4578 | 2 9 18 | 1478 13478 378 |
| 1 279 2789 | 5 3 4 | 26789 678 6789 |
| 34 2349 2489 | 18 7 6 | 12489 5 389 |
+---------------+------------+------------------+
| 56 57 3 | 168 4 18 | 5678 9 2 |
| 8 247 2467 | 369 56 359 | 467 3467 1 |
| 9 1 456 | 368 2 7 | 4568 3468 368 |
+---------------+------------+------------------+
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Play this puzzle online at the Daily Sudoku site
[(9-16)R1C7=(1)R1C3-(1)R2C3; (9-16)R1C7=(1-6)R1C3=(6)R1C1-(6=5))R7C1-(5)R4C1=(5)R4C3-(5)R23C3=(9)R2C3 and (9-6)R1C7=(6)R1C13-(6=9)R3C3]=>contradiction two singles 9 in box 1 or column3=>-9R1C7.
R2C4=6=>singles to the error=>-6R2C4.
R2C7=9=>singles to the error=>-9R2C7=>stte.
Ciao a Tutti
Paolo |
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