The New Sudoku Players' Forum

[hendrik_monard]

Hi Mith,

I put on my google drive the collection of all 55088 puzzles submitted by me from April 19th 2021 to August 15th 2023.
All lines have the same format: puzzle tab SER tab date of submission(YYMMDD)

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https://drive.google.com/file/d/1LxrL5R5vmYqj6f7FBEmPL5ot7OZY1pXH/view?usp=drive_link

Hendrik

[denis_berthier]

Currently I do not check for T&E(1), is it possible that an 11.0+ puzzle is T&E(1)? In other words, should I check it?

I would say it's extremely unlikely. The highest SER I can remember seeing in T&E(1) was 9.5 (I can be wrong about the exact value.)
However, I don't know all the arbitrary thresholds, bugs and inconsistencies that might lead to such an extraordinary situation as a 11.0+ being in T&E(1); as a result, I can't have a 100% certainty.


Indeed, I have an example in the ph2010 database:

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.6.7.........8......5..9.1.8...6......9.25.3..7......4.....35.1....9..2...2...3..;11.00;1.20;1.20;FLK;final2 2018_07;2112870;21; #756628

Problem is, it's not an example. The real SER is 9.2. By a pure coincidence, I was about to post about it elsewhere.

[denis_berthier]

I put on my google drive the collection of all 55088 puzzles submitted by me from April 19th 2021 to August 15th 2023.
All lines have the same format: puzzle tab SER tab date of submission(YYMMDD)
https://drive.google.com/file/d/1LxrL5R ... drive_link

Hi Hendrik
The link is broken.

[hendrik_monard]

Currently I do not check for T&E(1), is it possible that an 11.0+ puzzle is T&E(1)? In other words, should I check it?

Yes, possibly. I can give some examples of puzzles that were solved by my F1_Solver. I guess they are in T&E(1).
..1..23...4..1..5.5.......6...7.......7.3.8.....2.8...9.......4.6.....9...81..2.. 13739 11.20;11.20;9.90;col;H126;2049;21 98.7..6..7.........51.3....8....9.2..1.........5.....4...8.2.6.....1...5...9..27. 75249 11.10;1.20;1.20;col;2015_08;1683116;22

[denis_berthier]

Currently I do not check for T&E(1), is it possible that an 11.0+ puzzle is T&E(1)? In other words, should I check it?

Yes, possibly. I can give some examples of puzzles that were solved by my F1_Solver. I guess they are in T&E(1).
..1..23...4..1..5.5.......6...7.......7.3.8.....2.8...9.......4.6.....9...81..2.. 13739 11.20;11.20;9.90;col;H126;2049;21 98.7..6..7.........51.3....8....9.2..1.........5.....4...8.2.6.....1...5...9..27. 75249 11.10;1.20;1.20;col;2015_08;1683116;22

No, both are in T&E(2).

[hendrik_monard]

Hi Hendrik
The link is broken.

Thanks for seeing this. Apparently, the forum software did this when I submitted the post. I edited the original post and now it should be all right.

[eleven]

...
then to min
9.76..4..64.3......53......57...6...3.497...5.9.4.5..3....6.28....79..........3..

This puzzle (T&E(3), 11.8) can be solved relatively easily with TH, oddagons, a UR and coloring (i am sure there are shorter paths).

Hidden Text: Show

After TH => 6r5c2 and basics, RT 128 r1c26,r5c6 -> -1r79c6

Code: Select all

+-------------------------+---------------------------+-------------------------+
|   9      *28      7     |   6        5      *128    | 4       3       128     |
|   6       4       128   |   3      @*128     79     | 15789   12579   12789   |
|  #128     5       3     | @#28-1     4       79     | 16789   12679   126789  |
+-------------------------+---------------------------+-------------------------+
|   5       7       128   |  *128      3       6      | 189     1249    12489   |
|   3       6       4     |   9        7       128    | 18      12      5       |
|  @128     9       128   |   4      @*128     5      | 67      67      3       |
+-------------------------+---------------------------+-------------------------+
|   47      13      59    |   15       6       34     | 2       8       79      |
| @#28      238     56    |   7        9       238    | 156     1456    146     |
|   47   @#*128     569   |@#*1258     128     248    | 3       5679    679     |
+-------------------------+---------------------------+-------------------------+

Now we have a lot of lurking 28 oddagons (size 5,7).
1r3c4 => 5r7c4, 1r9c5: kills all 1's in the *-ed 7-cell oddagon => -1r3c4 [Edit: had a wrong cell marked *]
1r9c5 => 5r7c4 => (odd #) 1r3c1 => oddagon @ => -1r9c5 [Edit: corrected @ in the grid]
Then a skyscraper in c15 eliminates 1r3c2

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+----------------------+----------------------+----------------------+
| 9    #*28     7      | 6      5     #128    | 4      3      128    |
| 6      4     *28     | 3     *28+1   79     | 15789  12579  12789  |
| 1      5      3      |#28     4      79     | 6789   2679   26789  |
+----------------------+----------------------+----------------------+
| 5      7      128    |#28     3      6      | 189    1249   12489  |
| 3      6      4      | 9      7      128    | 18     12     5      |
| 28     9      128    | 4     #128    5      | 67     67     3      |
+----------------------+----------------------+----------------------+
| 47     13     59     | 15     6      34     | 2      8      79     |
| 28     238    56     | 7      9      238    | 156    1456   146    |
| 47   #*28+1   569    | 15   #*28     248    | 3      5679   679    |
+----------------------+----------------------+----------------------+

The *-ed 5-cell oddagon has extra candidates 1r9c2 and 1r2c5
1r2c5 => 7-cell oddagon # => 1r9c2
=> 1r9c2

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+--------------------+----------------------+------------------------+
| 9      28     7    |   6      5      128  |   4      3      128    |
| 6      4      28   |   3      128    79   |   15789  1259   1278   |
| 1      5      3    | *#28     4      79   |   679-8  9-2    2678   |
+--------------------+----------------------+------------------------+
| 5      7      128  | *#28     3      6    |   189    1249   1248   |
| 3      6      4    |   9      7    *#128  |  #18    *12     5      |
| 28     9      128  |   4      128    5    |   67     67     3      |
+--------------------+----------------------+------------------------+
| 7      3      5    |   1      6      4    |   2      8      9      |
| 28     28     6    |   7      9      3    |   15     145    14     |
| 4      1      9    |   5      28     28   |   3      67     67     |
+--------------------+----------------------+------------------------+

kites for (*) and 8 (#) => -2r3c8, -8r3c7

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+-------------------+-------------------+--------------------+
| 9     28    7     |  6     5     128  |  4     3     128   |
| 6     4     28    |  3     128   9    | #158  #25-1  7     |
| 1     5     3     |  28    4     7    |  6     9     28    |
+-------------------+-------------------+--------------------+
| 5     7     128   |  28    3     6    |  9     124   248-1 |
| 3     6     4     |  9     7     128  |  18    12    5     |
| 28    9     128   |  4     128   5    |  7     6     3     |
+-------------------+-------------------+--------------------+
| 7     3     5     |  1     6     4    |  2     8     9     |
| 28    28    6     |  7     9     3    | #15   #145   14    |
| 4     1     9     |  5     28    28   |  3     7     6     |
+-------------------+-------------------+--------------------+

Note the UR 15 r28c67 => -1r2c8,r4c9
The rest can be solved with skyscraper and kite.

[denis_berthier]

.
The ph2012 database is the last version of the meta-collection of puzzles with highest SER.
It has been defined here: http://forum.enjoysudoku.com/post296155.html#p296155
It has 3,103,972 puzzles, ranging from SER 10.2 to 11.9

Long ago, in support of my old T&E(2) conjecture, I had checked that all of these puzzles are at most in T&E(2), and therefore none is in T&E(3).

Considering the range of the SER, it should be expected that none is in T&E(1).

That's what I've just checked in collaboration with François Cordoliani (Defise). Except for the following two puzzles, which are in T&E(1):

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.6.7.........8......5..9.1.8...6......9.25.3..7......4.....35.1....9..2...2...3..;11.00;1.20;1.20;FLK;final2 2018_07;2112870;21; #756628; real SER = 9.2
.6.7.....4...8......5....1.8...6......9..5.3..7.9....4.....35.1...49..2...2...3..;10.60;10.60;9.40;FLK;final2 2018_07;2112865;22; #1900698; real SER = 9.4

As you can see, they shouldn't be in the database at all: their SERs are grossly overestimated.

[Paquita]

I get the impression that T&E(3) has a lot of 11.8 puzzles. In T&E(2), 11.8 is quite rare, with a lot more 11.7 and 11.6.
Now, when I find a 11.8, I am almost sure it is T&E(3) (they are all already in miths T&E(3) collection). And although I find only a few T&E(3) because I use T&E(2) seeds almost half of them is 11.8. Maybe another illustration of how the SE/PGX rating fails for T&E(3), also since I read the posts about how easy those puzzles sometimes are.

[denis_berthier]

I get the impression that T&E(3) has a lot of 11.8 puzzles. In T&E(2), 11.8 is quite rare, with a lot more 11.7 and 11.6.
Now, when I find a 11.8, I am almost sure it is T&E(3) (they are all already in miths T&E(3) collection). And although I find only a few T&E(3) because I use T&E(2) seeds almost half of them is 11.8. Maybe another illustration of how the SE/PGX rating fails for T&E(3), also since I read the posts about how easy those puzzles sometimes are.

Such posts reflect a confusion between two different ways of rating puzzles. One way is the SER (that doesn't take tridagons into account). The other way uses tridagons. It's like comparing bananas and snails.
Rest of the answer moved to the T&E(3) thread: http://forum.enjoysudoku.com/t-e-3-puzzles-split-from-hardest-sudokus-thread-t40514-26.html

[Paquita]

I have a new file with T&E(2) on my google drive https://drive.google.com/file/d/1RD3s143bAr9fH7mZKowxONr8L0Fo9G6j/view?usp=sharing

[Paquita]

And this weeks file with T&E(2) https://drive.google.com/file/d/1OqxjMgg-pSYHHqgK_wfJ_L7a7p6L-try/view?usp=sharing

[denis_berthier]

And this weeks file with T&E(2) https://drive.google.com/file/d/1OqxjMgg-pSYHHqgK_wfJ_L7a7p6L-try/view?usp=sharing

I understand that this is an updated version of your previous file, not only additions. Right?

distribution of the BpB rating:

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BpB        4   5      6
#puzzles   5   402    4001

[Paquita]

No these last 2 posts are both about new puzzles, not yet published, and additions to my previous published puzzles

[Paquita]

I have started to add lower rated puzzles (11.4 and 11.5) because you said that 11.4 would be a good lowest rate for the T&E(2) collection