Maximum number of clues for a given SE rating

Everything about Sudoku that doesn't fit in one of the other sections

Postby 999_Springs » Sun Apr 05, 2009 7:40 pm

Eioru wrote:
Code: Select all
.62.78.95
8.93.56.7
57.69..8.
.95784.6.
7.6..985.
.8.5.67.9
.5796...8
9.8..75.6
6..85.97.             ER=9.0         49 clues

It's only got 48 clues.

I had a bit of fun with it...

Code: Select all
.62.78.95
8.93.56.7
57.69..8.
.95784.6.
7.6..985.
.8.5.67.9
.5796...8
938..75.6
6..85.97.

ER=7.9, 49 clues (sorry tarek)

Code: Select all
.62.78.95
8.93.56.7
57.69..8.
.95784.6.
7.6..985.
.8.5.67.9
.5796...8
9.8..75.6
6..85397.

ER=8.4, 49 clues

I also found another non-isomorphic 67-clue puzzle rated 1.5.
Once upon a time I was a teenager who was active on here 2007-2011
999_Springs
 
Posts: 368
Joined: 27 January 2007
Location: In the toilet, flushing down springs, one by one.

Postby Eioru » Fri Apr 10, 2009 11:01 am

Code: Select all
639724158
72...6439
.4..3.267
46..7.382
.932.8746
287643591
376482915
854197623
912365874             ER=6.6         69 clues
Eioru
 
Posts: 182
Joined: 16 August 2006

Postby Eioru » Thu Apr 30, 2009 3:16 pm

Code: Select all
764.8.391
539714628
821...754
195.7.462
248956137
673.4.589
..6.2.9..
.5.....4.
....3....             ER=5.0         51 clues
Eioru
 
Posts: 182
Joined: 16 August 2006

Postby coloin » Sat May 09, 2009 2:26 pm

That 5.0 was found from the patterns game results !
Code: Select all
700080001009704600020000050100000002040906030000000000006020900050000040000030000 #  56    5.0/1.5/1.5 + gsf


So this 4.7 from the next game.....
Code: Select all
0000010000001203400050000060100000005060000030002604100070080050400070002000000000 #  70    4.7/1.2/1.2 - m_b_metcalf

expands to
Code: Select all
+---+---+---+
|.24|.16|5.3|
|6.1|253|4..|
|35.|.4.|261|
+---+---+---+
|14.|...|625|
|.6.|125|.34|
|5.2|6.4|1..|
+---+---+---+
|27.|481|.56|
|4.6|579|.12|
|.15|362|74.|
+---+---+---+  SE 4.7   55 clues
coloin
 
Posts: 1695
Joined: 05 May 2005

Postby 999_Springs » Sat May 09, 2009 2:59 pm

Found by almost random aimless clicking with my mouse on SE:

Code: Select all
1.8|469|.53
5.6|1.3|9..
493|2.5|1.6
---+---+---
715|942|638
839|651|...
264|837|591
---+---+---
647|528|319
381|794|265
952|316|..7 SE 1.5, 68 clues


As a result of this "random aimless clicking", my mouse now has a red light flashing on it, indicating that it's low on battery. Maybe I shouldn't have done that.
Once upon a time I was a teenager who was active on here 2007-2011
999_Springs
 
Posts: 368
Joined: 27 January 2007
Location: In the toilet, flushing down springs, one by one.

Postby 999_Springs » Mon May 18, 2009 10:26 am

Code: Select all
6..3.2.59
52..4..1.
..35..2..
3..1945..
.1.658.3.
..5273..1
..4..51..
.3..2..45
75.4....8    10.4/10.4/9.4 38 clues

6..3.2.59
52..4..1.
..35..2..
3..1945.2
.1.658.3.
..5273..1
..4..51..
.3..2..45
75.4.1..8    9.3/9.3/9.2 40 clues

6..3.2.59
52..4..1.
..35..2..
3..1945.2
.1.658.3.
4.5273..1
..4..51..
.3..2..45
75.4.1..8    9.2/9.2/9.2 41 clues

4..|153|.2.
..3|.6.|45.
.5.|.4.|..3
---+---+---
1..|6.5|.74
..4|.3.|5..
5..|4.7|.8.
---+---+---
347|58.|.1.
6..|2.4|735
..5|37.|.4.   8.1/8.1/2.6 40 clues

4..|153|82.
..3|.6.|45.
.5.|.4.|..3
---+---+---
1..|6.5|.74
..4|.3.|5..
5..|4.7|.8.
---+---+---
347|58.|.1.
6..|2.4|735
..5|37.|.48   8.0/8.0/2.6 42 clues

(the first three are based on Mauricio's 37 clue)
(the last two are based on JPF's 8.1 from patterns game 78)
Once upon a time I was a teenager who was active on here 2007-2011
999_Springs
 
Posts: 368
Joined: 27 January 2007
Location: In the toilet, flushing down springs, one by one.

Re: Maximum number of clues for a given SE rating

Postby m_b_metcalf » Fri May 28, 2010 2:07 pm

Was this topic still active? Is there a summary of progress thus far? Here's one I found recently.

Code: Select all
 
 1 2 3 4 5 6 7 8 9
 8 7 5 . 2 . 4 1 6
 9 4 6 . . . 2 5 3
 6 . . . . . . . 7
 7 . 9 . 3 . 1 . 2
 4 . . . . . . . 8
 5 6 4 . 7 . 8 9 1
 2 9 8 . . . 3 7 5
 3 1 7 5 9 8 6 2 4   ED=7.2/4.2/4.2, 53 clues, 7.2 reached at 54 clues

Regards,

Mike Metcalf
User avatar
m_b_metcalf
2017 Supporter
 
Posts: 8776
Joined: 15 May 2006
Location: Berlin

Re: Maximum number of clues for a given SE rating

Postby 999_Springs » Mon Mar 19, 2018 12:27 pm

eight year bump and first post in non-offtopic for me since may 2014. i was checking out these forums again and noticed that dobrichev posted some non minimal hard 48 clue puzzles here where all the digits 5,6,7,8,9 are filled in, and that blows all previous competition of this topic right out of the water. his puzzles go all the way up to 10.4 and you can add extra clues to some of them to fill in the lower difficulty levels. his puzzles contribute to 2.8, 4.7, 7.4, 7.8-8.2, 8.4-9.5, and 9.7-10.4.

many of these puzzles are taken from his other post here where he gives an example of one puzzle per skfr rating. unfortunately he says he's lost all the rest of the puzzles since then so there's no better way to fill in the gaps. in particular because of skfr rating differences with se, there is nothing in his collection at 9.6.

i kept an old word doc containing all the puzzles with records with more detail than eioru's old posts, and i also found a few improvements to 3.8, 4.5, 4.6, 4.8, 5.2, 5.7, 6.5, and 6.8. some of these, like 5.7, were from me messing around with raw pencilmark grids to see if i could get a combination of pencilmarks to give the corresponding technique in se without any single eliminations. it wasn't in a very systematic way, just done by hand when bored. others were trivial improvements on existing puzzles, like my 6.8 is daj's puzzle with 2 cells removed from the pencilmark grid. i also created separate categories for 5.0 (quad) and 5.0 (UL10) as they're very different techniques.

according to my notes, the patterns game provided 4.9 (champagne) 5.0UL10 (joel64) 5.1 (champagne) 5.8 (gsf) 5.9 (gsf) and 6.0 (joel64). my 4.8 is champagne's 4.9 with cells removed. but these notes are from forever ago so i have no details of which game or where they came from or if extra cells were added or removed. also there's a new 10.5 from patrice that i have absolutely no memory at all of where it comes from. also according to my notes the 4.0 puzzle comes directly from the metro, which is a trashy tabloid newspaper found left behind everywhere on bus seats throughout england. what the hell, really?

puzzles below.
Hidden Text: Show
ER |clues
----+-------------
1.0 | 80 |
1.2 | 77 |
1.5 | 68 | 1.8469.535.61.39..4932.51.6715942638839651...264837591647528319381794265952316..7
1.7 | 63 | 568749132791283645423165.9.6143..52.235.14..69875264131764.2.5..596.12.4.42.5..61
2.0 | 69 | 437691825268537941159842763892..5.3.615..3.8.743..8.5.326789514574316298981254376
2.3 | 64 | 327415698159862347684...25194....17571.....2353...1.69893..4716475186932261937584
2.5 | 61 | ...49.185..41..937.91.73642...7..451.1..4.273.4.231869459617328182354796376928514
2.6 | 66 | 219356784843..76596574982..19874.5.64325619787658.9.4.976.854..3219748655846...97
2.8 | 60 | 85.79263.673814925..9356.8778.5.9.6.9.56.3.78..61785495.7.81.96.9..6785.468935712
3.0 | 61 | 54....387..3.7.659679853421..5.3.946.6....735.34..5812257389164498516273316247598
3.2 | 63 | 18.2.79.5.59..1827.72589.1.7186245932649531789357182..89.1.57.2521.76.89.47892.51
3.4 | 57 | ..2...4131...2.689...1..257.1927.36572....891....91724985742136237916548641385972
3.6 | 54 | ......387....7.659.798.3421..5.3.946.6....735.....5812257389164498516273316247598
3.8 | 59 | 415.67.8967.89.4.589.4.5.67.6974285.287.596.4.546.89727.19845.69.85.674.546.7..98
4.0 | 50 | .4.731.9.1........9.78.....4863579127529148363192685475.31824.9..1.......94673.5.
4.2 | 70 | 96173254884395672172581463919467385268752.3.4352..8.67419385276238.67..55762...83
4.4 | 66 | 3495812676283975145714629384537296817861..492912.4.753165..4..92379...46894.....5
4.5 | 67 | 13524678926...75344.735.21665..3.1277235614988.1.726535..623971372..4865916785342
4.6 | 65 | 31524678942...75636.735.24125..3.1768365714927.1.623585..623917.72.84635.637.5824
4.7 | 64 | 9768125..813594726.5.376189768923415..516789..91458.676.97.1.585.72896.118.6.597.
4.8 | 56 | 1.7..2..429347.5.8.46....27.72349..63698..4724.1267..3714...235935724681628..3749
4.9 | 54 | 1.4..7..293742.5.8.26....47.79362..44138592766.2714..334....72.79824.63.26..73489
5.0Quad | 51 | 764.8.391539714628821...754195.7.462248956137673.4.589..6.2.9...5.....4.....3....
5.0UL10 | 63 | .1582.73.37.41.52828.735.6.867241395193658247542973.8.75.3.281..381.7.52.21584.73
5.1 | 50 | .29.58..15.81.2.9....349258..4.86..2..1.27.8.852413967..5.3.829.83295.7629.8..3.5
5.2 | 61 | .285.9437357.4.8.949.3785.2.73..4928..98..374842793651784.36.952..9857439354.7.86
5.4 | 49 | 632145978817.92..4.4..87.1....85....16.274......96....481529.6.753416..9296738.4.
5.6 | 70 | 12345678945678912378913256423.9.58.66.52.893.8973612453625174985.86943.29..82365.
5.7 | 65 | 16324578942...73565.736.12421..3.567736..24988.5.762133..621975671..3842952784631
5.8 | 62 | .617924.323.645.7.4.73182.66.2873.45.7...463.3.4..67..786431529145289367923567814
5.9 | 64 | 176238594845179362932...7184573...81281.5..366938...75728...643569483127314.2.859
6.0 | 60 | 169238574842..5963573.9.82179.....1642..6.39563...9.87956...142317942658284.5.739
6.1 | 60 | 528...341931524786476381592.19...85..64...17..53...62.195438267382976415647...938
6.2 | 64 | 259641738743985126681372..4896513247537264...412897...92473....37815.4.216542..7.
6.5 | 61 | 1.87.3649634.19..7..74861.3316872495785941362.4.3657185716.89.446...7..18.31.4.76
6.6 | 69 | 63972415872...6439.4..3.26746..7.382.932.8746287643591376482915854197623912365874
6.7 | 64 | 12.689.7586.735..175.142...385274169942561738671398.5.438926517596417...217853...
6.8 | 64 | 6..1..38..3.5.8.1..183...9...1723846243816759876459123127934568369285471485671932
6.9 | 65 | ..2.4.658....6.42346.25.971.4.532769926487135...619284685124397319876542274395816
7.0 | 63 | .134.7825..48.263128.1.3947....243183429187568.1.36294429671583.382451.91..3894.2
7.1 | 65 | 642319578187...439359...261914283657276...8935389..142721495386493...715865.3.924
7.2 | 65 | .6..92.84..4.16.35....54.96126935478759428361843167952...243617632571849417689523
7.3 | 61 | 371542986682...345459...217914376528768...13.523...76.135984672247...893896...451
7.4 | 50 | 9785..6..5..6.7.98.6..98.5789..567...567...89..7.8956.7..8.59466.597.821.8926.375
7.5 | 53 | .5....217....5.8348..3..659..8...57127....946......382582941763746523198931786425
7.6 | 57 | .45.67.896.78.94.589.45.67.4..57.896.69..8547578946123.5479..6878.6.495.9.6.857.4
7.7 | 57 | 4.5.67.8967..894.589.4.567.568.94..77.45..8969..67854.15794..682498.675.38675.9.4
7.8 | 56 | 59.86.7..86...7.95.475.968271892.5.6934156278256.789..62.78..59.85.9..67.796.582.
7.9 | 55 | 95.76.8..86...9.75..78.596268..9.5.7.2567..89.795.862.7164532985.8927..629.18675.
8.0 | 53 | 95.76.8..86...9.75..78.596.68..9.5.7.2567..89.795.862.7164532985.8927..6.9.18675.
8.1 | 50 | 6857.29..71.95..86.49.86.5789.6.5.7..56..78.9.3789.56.96.5..7.852..7869..78.69..5
8.2 | 51 | 57196.8..86.3.7.953.98.567.78.59..6.9.54.67.8..678..596..2589.7.976..58..58179..6
8.3 | 58 | ....472969...8.45747.5.9831..4...789.9...8164....94523549876312638412975721935648
8.4 | 54 | 59.86.7..86...7.95.475.968.7189..5.6934156278256.789..62.78..59.85.9..67.796.582.
8.5 | 54 | 59.86.7..86...7.95.475.968.7189..5.6934156278256.7891.62.78..59.85.9..67.796.58..
8.6 | 48 | 9758..6..6..97.8.5.8..56.7989.5..467.567.891...7.6958.76..9..585.86.729...9.857.6
8.7 | 48 | 98.75.6..6729.45.8..5.68.9789.5.67...56..7.89..7891.5656...987.7.9.85.6...867.9.5
8.8 | 54 | 59.86.7..86...7.95.475.968.7189..5.6934156278256.789..62.78..59.8529..67.796.58..
8.9 | 53 | 57.96.8..86...7.953.98.567.78.59..6.9.5..67.81.678..596132589472976..58.458.79..6
9.0 | 53 | 7956..8..813.95.76246.87.9567.8.9.5.92.56.78.358.7.6.95627..9.8.379.856..89.56..7
9.1 | 51 | 57.96.8..86...7.953.98.567.78.59..6.9.5..67.81.678..596..2589472976..58.458.79..6
9.2 | 52 | 95.76.8..86...9.75..78.596.68..9.5.7..567..89.795.862.7164532985.8927..6.9.18675.
9.3 | 48 | 8756..9..61..98.75.49.75.8678...956.9..5.67.8.5678...959..638.7..785.69..689.7.5.
9.4 | 48 | 97.68.53.68.5...97..5.796.889..56.7..56..78.94.789..5656.71.98.7.9.68..5..89.576.
9.5 | 50 | 7956..8..81..95.76.46.87.9567.8.9.5.92.56.78..58.7.6.956.73.9.8.379.856..89.56..7
9.6
9.7 | 48 | 9875..6..5..76..98.62.89.578.9.567.3.56..7.89.7.89.56.7.5.489.66.89.5.7..9.67.8.5
9.8 | 48 | 9685.27.45..9768..7...8.59668..9..57..56.7.89.79.586..8.67.59...5..69.78.978.3.65
9.9 | 49 | 8759..6..6..87..59..9.65.7878...95.6932456781.5678..9.5.8..796..6.59.8.7.976.8..5
10.0| 49 | 8756..9..61..98.75.49.75.8678...956.92.5.67.8.5678...959..6.8.7.3785.69..689.7.5.
10.1| 51 | 95.76.8..86...9.75..78.596.68..9.5.7..567..89.795.86..7164532985.8927..6.9.18675.
10.2| 49 | 6857..9..71395..86249.86.5789.6.5.7..56..78.9..789.56.96.5..7.85...7869..78.69..5
10.3| 49 | 57.96.8..86...7.953.98.567.78.59..6.9.5..67.81.678..596..258947.976..58..58.79..6
10.4| 49 | 7956..8..81..95.76.46.87.9567.8.9.5.92.56.78..58.7.6.956.7..9.8.379.856..89.56..7
10.5| 34 | ..3..2.46...3..82.2...6.3.7.2...843...7..3..23..92.....925..6.353.2.6...7.6.3.2..
11.2| 37 | 6....2.5952..4..1...35..2..3..1945...1.658.3...5273..1..4..51...3..2..4575.4....8

if anyone feels like they would like to contribute more to this topic, you're very welcome to. or not, if you feel this thread has been brought seamlessly to a natural conclusion after dobrichev's puzzles. why am i on a sudoku forum again i haven't been here in 4 years why am i doing this
Once upon a time I was a teenager who was active on here 2007-2011
999_Springs
 
Posts: 368
Joined: 27 January 2007
Location: In the toilet, flushing down springs, one by one.

Re: Maximum number of clues for a given SE rating

Postby enxio27 » Mon Mar 19, 2018 2:43 pm

999_Springs wrote:why am i on a sudoku forum again i haven't been here in 4 years why am i doing this

Whatever the reason, it's good to see you here again. :D
User avatar
enxio27
 
Posts: 394
Joined: 13 November 2007

Previous

Return to General