I encountered a discussion about an ArtoI sudoku creation here by chance here
Zapmeister (a.k.a. 999_Springs) -in his own way- giving his coments
tarek wrote:I encountered a discussion about an ArtoI sudoku creation here by chance here
Zapmeister (a.k.a. 999_Springs) -in his own way- giving his coments
tarek wrote:I encountered a discussion about an ArtoI sudoku creation here by chance here
Zapmeister (a.k.a. 999_Springs) -in his own way- giving his coments
ocean and eleven should have paired up to make a sudoku-solving duo called Ocean's Eleven
ocean and eleven should have paired up to make a sudoku-solving duo called Ocean's Eleven
98.7.....6..89......1..4...7...3.9....6...7....2....51.6..8.3.......5.4.........2;11.80;11.80;2.60;225580;col;2012_11_10;0
*-----------*
|98.|7..|...|
|6..|89.|...|
|..1|..4|...|
|---+---+---|
|7..|.3.|9..|
|..6|...|7..|
|..2|...|.51|
|---+---+---|
|.6.|.8.|3..|
|...|..5|.4.|
|...|...|..2|
*-----------*
swu wrote:Hi, champagne,
I played around a bit with the multifish pattern and became quite good at manually spotting it. I tried one of your "nothing special" puzzles of the december update with the highest SE rating and found a rank 0 logic with 20 truths:
- Code: Select all
98.7.....6..89......1..4...7...3.9....6...7....2....51.6..8.3.......5.4.........2;11.80;11.80;2.60;225580;col;2012_11_10;0
The way to find it is to look for a set of 4 digits that hardly mix with the non-set digits in rows and columns.
....
Anyway, I believe this puzzle should be moved to the rank 0 only file.
swu wrote:Hi, champagne,
I played around a bit with the multifish pattern and became quite good at manually spotting it. I tried one of your "nothing special" puzzles of the december update with the highest SE rating and found a rank 0 logic with 20 truths:
- Code: Select all
98.7.....6..89......1..4...7...3.9....6...7....2....51.6..8.3.......5.4.........2;11.80;11.80;2.60;225580;col;2012_11_10;0
...
Anyway, I believe this puzzle should be moved to the rank 0 only file.
9 8 345 |7 1256 1236 |12456 136 3456
6 23457 3457 |8 9 123 |1245 137 3457
235 2357 1 |2356 256 4 |2568 36789 356789
--------------------------------------------------------
7 145 458 |12456 3 1268 |9 268 468
1458 1459 6 |12459 1245 1289 |7 238 348
348 349 2 |469 467 6789 |468 5 1
--------------------------------------------------------
1245 6 4579 |1249 8 1279 |3 179 579
1238 1237 3789 |12369 1267 5 |168 4 6789
13458 13457 345789 |13469 1467 13679 |1568 16789 2
| A . . | B . . |
| . A . | . B . |
| . . . | . . . |
-----------------
| B . . | A . . |
| . B . | . A . |
| . . . | . . . |
. . 7 | . . 1 | . . .
6 . . | . 9 . | 2 . .
. 3 . | 5 . . | . . .
------| ------| ------
9 . . | . . . | 6 . 8
. . . | . . . | . 3 .
. . . | . 8 . | . 9 2
------| ------| ------
2 . . | . 4 . | . . 9
. . 1 | 3 . . | . . .
. 5 . | . . 7 | . . .
David P Bird wrote:
- Code: Select all
. . 7 | . . 1 | . . .
6 . . | . 9 . | 2 . .
. 3 . | 5 . . | . . .
------| ------| ------
9 . . | . . . | 6 . 8
. . . | . . . | . 3 .
. . . | . 8 . | . 9 2
------| ------| ------
2 . . | . 4 . | . . 9
. . 1 | 3 . . | . . .
. 5 . | . . 7 | . . .
Here is a full blown SK loop with (15) & (37) in boxes 1278 fitting the pattern which gives:
Multi-sector Locked Set:(48)r2,(68)r7,(48)c1,(26)c5,(15)b1,(37)b2,(37)b7,(15)b8 16 digits/available cells
David P Bird wrote:When there is an SK loop potential I look for 4 givens that match or nearly match this pattern of pairs
- Code: Select all
| A . . | B . . |
| . A . | . B . |
| . . . | . . . |
-----------------
| B . . | A . . |
| . B . | . A . |
| . . . | . . . |
I then set these as cover sets for the 4 boxes and the complementary set for the 'unoccupied' rows and columns in the 4 boxes.
..7..1...6...9.2...3.5.....9.....6.8.......3.....8..922...4...9..13......5...7...;179;tax;tarek071223170000-;K;;;;G13
- Code: Select all
. . 7 | . . 1 | . . .
6 . . | . 9 . | 2 . .
. 3 . | 5 . . | . . .
------| ------| ------
9 . . | . . . | 6 . 8
. . . | . . . | . 3 .
. . . | . 8 . | . 9 2
------| ------| ------
2 . . | . 4 . | . . 9
. . 1 | 3 . . | . . .
. 5 . | . . 7 | . . .
1) a rectangle in four boxes with four corners given and empty cells in the rows columns
here the corners are 6r2c1 9r2c5 4r7c5 2r7c1
2) each pair of cells in the rows columns of the rectangle sees 5 given exactly
r2c23 sees 763 29
r13c1 sees 763 29
r2c46 sees 195 26
....