More from Phil

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More from Phil

Postby pjb » Sun Aug 09, 2026 4:15 am

Code: Select all
...|6.3|...
..6|.9.|3..
..1|8.7|9..
---+---+---
...|...|...
3.8|9.6|2.5
..7|.5.|6..
---+---+---
.74|...|52.
...|.4.|...
2..|.3.|..7


Phil
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Re: More from Phil

Postby RSW » Sun Aug 09, 2026 8:12 am

Code: Select all
 +-----------------+---------+----------------+
 | 459   24589  25 | 6  1 3  | 478 4578  248  |
 | 7     28     6  | 4  9 5  | 3  a8-1   128  |
 | 45    3      1  | 8  2 7  | 9   456   46   |
 +-----------------+---------+----------------+
 | 14569 124569 25 | 23 8 14 | 147 13479 149  |
 | 3    c14     8  | 9  7 6  | 2 ad14    5    |
 | 149   1249   7  | 23 5 14 | 6   13489 1489 |
 +-----------------+---------+----------------+
 | 8     7      4  | 1  6 9  | 5   2     3    |
 | 156   156    3  | 7  4 2  | 18  1689  1689 |
 | 2    b16     9  | 5  3 8  | 14 a146   7    |
 +-----------------+---------+----------------+

(8=146)r259c8 - (6=1)r9c2 - (1)r5c2 = (1)r5c8 => -1r2c8; ste
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Re: More from Phil

Postby Cenoman » Sun Aug 09, 2026 3:42 pm

RSW wrote:(8=146)r259c8 - (6=1)r9c2 - (1)r5c2 = (1)r5c8 => -1r2c8; ste

Nice ALS H-Wing !
Suggestion: slim the als; (1=46)r59c8 - (6=1)r9c2 - (1)r5c2 = (1)r5c8 => -1r2c8; ste

Now, something different:
Code: Select all
 +------------------------+-----------------+-----------------------+
 |  459     24589    25   |  6    1    3    |  478   4578    248    |
 |  7       28       6    |  4    9    5    |  3     18      128    |
 |  45      3        1    |  8    2    7    |  9     456     46     |
 +------------------------+-----------------+-----------------------+
 |  14569   124569   25   |  23   8    14   |  147   13479   149    |
 |  3       14       8    |  9    7    6    |  2     14      5      |
 |  149     1249     7    |  23   5    14   |  6     13489   1489   |
 +------------------------+-----------------+-----------------------+
 |  8       7        4    |  1    6    9    |  5     2       3      |
 |  156     156      3    |  7    4    2    |  18    1689    1689   |
 |  2       16       9    |  5    3    8    |  14    146     7      |
 +------------------------+-----------------+-----------------------+

Almost M2-Wing:
(1)r9c7 =' [(1)r4c7 '= (1-8)r8c7 = r8c1 - (8=1)r2c8] - (1)r5c8 = (1)r5c2 => -1 r9c2; ste
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Re: More from Phil

Postby RSW » Mon Aug 10, 2026 1:07 am

Cenoman wrote:Suggestion: slim the als; (1=46)r59c8 - (6=1)r9c2 - (1)r5c2 = (1)r5c8 => -1r2c8; ste

Thanks. I missed that.
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Re: More from Phil

Postby rjamil » Mon Aug 10, 2026 11:51 am

Simpliest OTP move solution:

Code: Select all
 +-------------------+-----------+------------------+
 | 459    24589   25 | 6   1  3  | 478  4578   248  |
 | 7      28      6  | 4   9  5  | 3    8-1    128  |
 | 45     3       1  | 8   2  7  | 9    456    46   |
 +-------------------+-----------+------------------+
 | 14569  124569  25 | 23  8  14 | 147  3479-1 149  |
 | 3      4*1     8  | 9   7  6  | 2   *14     5    |
 | 149    1249    7  | 23  5  14 | 6    3489-1 1489 |
 +-------------------+-----------+------------------+
 | 8      7       4  | 1   6  9  | 5    2      3    |
 | 156    156     3  | 7   4  2  | 18   689-1  1689 |
 | 2     *16      9  | 5   3  8  | 14  *146    7    |
 +-------------------+-----------+------------------+

XYZ-Hybrid: 146 @ r9c28 r5c8 Row wise Hybrid 1 @ r5c2 => -1 @ r24678c8; stte

R. Jamil
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Re: More from Phil

Postby pjb » Mon Aug 10, 2026 12:06 pm

Hi rjamil, spot on.
I came across this when I was looking for exmples for my solver's section on XYZ varieties.
Phil
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Location: Sydney, Australia

Re: More from Phil

Postby rjamil » Mon Aug 10, 2026 4:13 pm

pjb wrote:Hi rjamil, spot on.
I came across this when I was looking for exmples for my solver's section on XYZ varieties.
Phil

I think, It's called XYZ-Ring (Half and Full variants) in yzfwsf's YZF_Sudoku and your online solvers; and also called XYZ-Transport in StrmCkr nomenclature.

R. Jamil
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