The New Sudoku Players' Forum

[Ocean]

any opinions

It would be nice for this thread to stabilize at some point. ... We can always start a new batch in another thread ...
Ruud.

I agree with Ruud.

I tend to agree with Ruud and ab, that it would be natural to 'round off' at some point, and end up with a stable collection. For my part, I'm satisfied with filling my quota. It's nice to have as many different contributors as possible, as this guarantees variation, and each contribution is a stimulus for others.


This one shows good variety: Both an x-wing, a hidden triple, a hidden double, a naked pair, and locked candidates. But my counter is not always reliable, as it might count techniques that are 'not needed'... (it has been a useful screening tool though).

Code: Select all

+-------+-------+-------+
| 3 9 . | . 5 . | . . . |
| . 6 . | . 2 . | . 5 9 |
| . . 4 | 3 . . | . . 8 |
+-------+-------+-------+
| 6 . . | . . . | 5 1 . |
| . 5 . | . . . | . 7 . |
| . 4 8 | . . . | . . 2 |
+-------+-------+-------+
| 4 . . | . . 1 | 2 . . |
| 2 1 . | . 8 . | . 9 . |
| . . . | . 7 . | . 4 1 |
+-------+-------+-------+

[ab]

I played around with one of vidarino's rejected puzzles and made a slight improvement:

Code: Select all

...|2.5|...
..5|.1.|6..
.8.|4..|.5.
-----------
8.2|..7|..5
.5.|.9.|.6.
9..|5..|7.4
-----------
.3.|..4|.8.
..6|.7.|3..
...|3.1|...


[Ocean]

The limit of 100 is arbitrary, as the the limit per person.

How about letting the total exceed 100 but keeping the individual limit?

My interest is that I like the quality puzzles, the more the better!

Fermat: These are extras for you: 50 leftovers. They all contain an X-wing, and should qualify as 'superior' puzzles. They are all quite pretty, since they have full symmetry, rotational and reflectional, 50 different patterns.

Thanks also to Tarek, who 'taught' me how to make them.

Code: Select all

50 leftovers, superior puzzles, full symmetric.
005010300060070080100504009006000900890000054003000800300205008080090030004080200
000000000003109600080604070062010840000902000071050230090306020008201400000000000
100000009000197000005040800020405070016030590070209060001080600000926000600000004
030000060700905002000806000056000910000090000087000540000107000800609004040000050
002000800000901000500302007037020560000405000015060420800706001000503000004000900
000000000097401250053000410040506030000070000010802040036000890084905670000000000
004801700000070000700503006802000405090000030503000201100609007000040000005708100
070030060400080005000607000007305200850000034003802600000406000300050001080090020
006070400000602000300090007060907050704050103080304020600080005000701000007060300
900000003006803500030070080090010020003607100040080060010060050005201400800000001
000906000008010400070403010701000306050020070803000509040201080002090100000608000
000608000001902300050000020690030054000409000730080019010000080002103700000806000
400000002080103040000754000095000480001060300072000590000816000060905070900000008
050309020200501006000040000860000052001000300470000061000050000100407005040106030
000903000060745030003000700320000089050020040180000052006000500070639020000508000
000408000007010200090070080200301005083000910100502008040020060002040700000907000
500706003007010500080000020800020001070108030900060008090000010004090700100405009
001409200000010000800703006109000305050000080207000601700608002000030000006201400
030070040500301007000405000078000490400000006069000750000102000300807005020090080
600030004002709600080040020090000060305000701010000040060020050009406100200050006
002050700080070010900204003007000200810000036005000100400807005050030020003040800
030050010160408032000000000070902060900000008080301070000000000710206054050030080
040103080600000001007020900500402003002000100300905007006030400400000008080706010
300090004050020010001703900003000200620000095004000600006309700030060080200040006
080509060400607001000020000570000018001000300240000096000050000300206007060801040
003080500060000090900207003001805200400000007002304900100703005030000010008020300
800000006005308700037000840040805090000090000090203080053000260006701300200000008
000253000020906080004000200940000027100000005250000093002000700080502060000378000
000203000009070600028000370800050004030407080500030001087000910005080400000106000
080305070750040082000080000400000005018000930200000008000050000540090026090701050
000040000001608900020090030030050060905206803060080020050060090009307500000020000
300000005002703900010060030060070040007305200030020090020010080001208600400000002
800604007040907030000030000490000021001000500280000064000050000020806040700302009
900508001000602000005010900610000037003000100480000096006070400000106000800405009
900060002060107040000309000018000720200010005076000430000506000020401080700080006
050804020700309005000060000390000042002090600410000039000010000100208007030706050
010906070800050006000308000403000207070000090509000108000602000700080001050703040
020000010180020043003000500000419000010302050000576000006000400750030029040000080
900070004000000000007641300003207600408000701002504800009463200000000000700050008
500000006003000200080207050006859300000702000007346100060408020002000500100000008
106000302000602000400030007050070020004301600030050010300010006000207000902000508
002000600007905200180000093070302050000090000040706030790000081003104700008000300
003209600000080000809000105400106003090000060600307008704000801000010000008702400
400309008030060070000207000801000906090010020703000804000102000080030040600804002
003209800080000040900060002800090004002405900600020003100050006070000030006708100
000861000020070040006000300200010003160408052300020008007000600030040090000587000
010405090500309002000060000180000035006000800420000017000080000300201006070906020
003705800000040000500308004301000602090000050402000301200503009000070000005604700
800090007030105040001000500060908030900000006050601090004000200020709050700010004
090000080702000604063000910000526000000903000000748000084000270607000301050000090

[fermat]

Fermat: These are extras for you: 50 leftovers. They all contain an X-wing, and should qualify as 'superior' puzzles. They are all quite pretty, since they have full symmetry, rotational and reflectional, 50 different patterns.

Thanks also to Tarek, who 'taught' me how to make them.

Thank you!!

I redo puzzles, after a week or two, and rarely remember that I did them.
This will help with my collection of pencil puzzles, I do many a day. Too many, says my wife. <sigh>

[tarek]

I will be back shortly to sort out the additions to this thread.....slightly busy this week but for good reasons

In the meantime here are two modifications of JPF's entry which did not make the list.... They are superiors however they will not compete for any medals.

Code: Select all

JPF/tarek #1
 6 . . | 3 1 9 | . . 7 
 . 1 . | 2 . 4 | . 5 . 
 . . . | . . . | . . . 
-------+-------+------
 1 8 . | . . . | . 6 9 
 7 . . | . 2 . | . . 1 
 2 4 . | . . . | . 7 5 
-------+-------+------
 . . . | . . . | . . . 
 . 6 . | 1 . 8 | . 3 . 
 9 . . | 7 5 3 | . . 6 

JPF/tarek #2
 6 . . | 3 1 9 | . . 7 
 . . . | 2 . 4 | . . . 
 . 7 . | . . . | . . . 
-------+-------+------
 1 8 . | . . . | . 6 9 
 7 . . | . 6 . | . . 1 
 2 4 . | . . . | . 7 5 
-------+-------+------
 . . . | . . . | . 9 . 
 . . . | 4 . 8 | . . . 
 9 . . | 7 5 3 | . . 6 

tarek

[JPF]

In the meantime here are two modifications of JPF's entry which did not make the list.... They are superiors however they will not compete for any medals.

tarek

Thanx Tarek.

Too bad for the medal

I have to build a human-solver (which, actually, I don’t have at the moment) with all the appropriate rules.
I will do it during my next vacation !
so, I will hopefully be able to compete and maybe win “a” medal

Jean-Pierre.

[ab]

another puzzle. needs x wing and hidden and naked pairs and locked candidates for good measure:

Code: Select all

...|..8|...
3.4|..1|7..
...|54.|..2
-----------
..6|.5.|9..
2.3|...|4.1
..1|.6.|5..
-----------
1..|.85|...
..7|2..|3.4
...|9..|...


[tarek]

Ocean,
The highest scoring puzzles from all your latest puzzles were these 2:

Code: Select all

Ocean Score 9
 . 4 . | 1 . 3 | . 8 . 
 6 . . | . . . | . . 1 
 . . 7 | . 2 . | 9 . . 
-------+-------+------
 5 . . | 4 . 2 | . . 3 
 . . 2 | . . . | 1 . . 
 3 . . | 9 . 5 | . . 7 
-------+-------+------
 . . 6 | . 3 . | 4 . . 
 4 . . | . . . | . . 8 
 . 8 . | 7 . 6 | . 1 . 
Ocean Score 7
 . 5 . | 3 . 9 | . 2 . 
 2 . . | 5 . 1 | . . 6 
 . . . | . 4 . | . . . 
-------+-------+------
 8 6 . | . . . | . 5 2 
 . . 1 | . . . | 3 . . 
 4 7 . | . . . | . 6 1 
-------+-------+------
 . . . | . 5 . | . . . 
 1 . . | 4 . 7 | . . 5 
 . 4 . | 1 . 6 | . 3 . 

the first will be added to the list, the will not as it did not score a 9.

ab,
the first puzzle scored a 3, so not on the list
the second scored a 6 so it goes on the list replacing Ocean's #86

the 2 modifications of JPF's puzzle will go replacing Oceans #84 & #37

we still have 8 puzzles to replace..........

vidarino, Ruud & Ocean: Any puzzle scoring 9 and above will be added to the list, your lower ranking extra puzzle would then be replaced by an equal other members' puzzles.

tarek

[tarek]

as we approach the 100, I was thinking of the next challenge....

what do you suggest....

I was thinking along two possibilities:

1. stepping down into fiendish terretory (narrow singles path with box line eliminations)

2. stepping up (I would love this): Fish & quads....it has a twist.. there has to be a fish which does not have a 2x2x2..... formation (if n is the fish it should not be formed out of 2n number of cells.) no xy wing, no colouring needed, no finned or turbot.....

what do you think

tarek

[Red Ed]

If you go for fish, would you mind giving a definitive reference for the patterns you're allowing. We don't all know what "Black Banded Piranha" (or whatever crazy name has been thought up recently) means in the context of sudoku ...

Ed.

[tarek]

If you go for fish, would you mind giving a definitive reference for the patterns you're allowing. We don't all know what "Black Banded Piranha"

It would be classic fish Red Ed only (ie swordfish, Jellyfish), however I will allow the black banded piranha as we did not have any freshwater fish to date

tarek

[Ocean]

Not sure how these score, but they have nice symmetry.

Code: Select all

 . . . | . 7 . | . . .
 . . 4 | 6 . 8 | 3 . .
 . 6 . | 5 . 1 | . 8 .
-------+-------+------
 . 3 6 | . . . | 4 9 .
 5 . . | . . . | . . 6
 . 9 7 | . . . | 5 1 .
-------+-------+------
 . 1 . | 7 . 2 | . 5 .
 . . 2 | 4 . 9 | 7 . .
 . . . | . 1 . | . . .
 


 4 . 7 | . . . | 8 . 5
 . 1 . | . . . | . 2 .
 6 . . | 3 . 9 | . . 4
-------+-------+------
 . . 8 | 1 . 5 | 4 . .
 . . . | . 6 . | . . .
 . . 3 | 4 . 7 | 6 . .
-------+-------+------
 3 . . | 5 . 2 | . . 7
 . 2 . | . . . |. 3 .
 9 . 5 | . . . |2 . 8

[ab]

Not sure how these score, but they have nice symmetry.

I think both your puzzles score high enough Ocean. But if you're willing to sacrifice a little symmetry, the second puzzle's score can be improved

Code: Select all



 . . 7 | . . . | 8 . 5
 . 1 . | . . . | . 2 .
 6 . . | 3 . 9 | . . 4
-------+-------+------
 . . 8 | 1 . 5 | 4 . .
 . . . | . 6 . | . . .
 . . 3 | 4 . 7 | 6 . .
-------+-------+------
 3 . . | 5 . 2 | . . 7
 . 2 . | . . . | . 3 .
 9 . 5 | . . . | 2 . .

[Ocean]

I think both your puzzles score high enough Ocean. But if you're willing to sacrifice a little symmetry, the second puzzle's score can be improved

OK, thank you!

Here is another one I'm not sure about. It seems it can be solved with "quads only", but also with "two xwings and a triple".

Code: Select all

 . . . | . 3 . | . . .
 . . 7 | 5 . 8 | 1 . .
 . 1 9 | 6 . 7 | 5 2 .
-------+-------+------
 . 9 5 | . . . | 3 1 .
 4 . . | . . . | . . 5
 . 7 3 | . . . | 6 4 .
-------+-------+------
 . 5 4 | 7 . 1 | 2 8 .
 . . 8 | 9 . 2 | 4 . .
 . . . | . 8 . | . . .

And a few more candidates. I hope to replace all my first puzzles with nice symmetric ones - but it's a bit hard as they have to score at least nine points now. Therefore:

Code: Select all

 . . . | 3 . 2 | . . .
 . . 3 | . 1 . | 6 . .
 . 8 . | 5 . 7 |  . 9 .
-------+-------+------
 6 . 2 | . . . | 1 . 5
 . 4 . | . . . | . 3 .
 3 . 1 | . . . | 4 . 2
-------+-------+------
 . 3 . | 7 . 5 | . 4 .
 . . 9 | . 3 . | 7 . .
 . . . | 1 . 6 | . . .

######################

 . . . | 4 . 5 | . . .
 . . 6 | . 8 . | 2 . .
 . 2 . | 6 . 7 | . 1 .
-------+-------+------
 3 . 2 | . . . | 5 . 9
 . 4 . | . . . | . 6 .
 6 . 5 | . . . | 1 . 2
-------+-------+------
 . 6 . | 5 . 2 | . 8 .
 . . 7 | . 9 . | 6 . .
 . . . | 7 . 1 | . . .

######################
 
 . . 4 | . . . | 8 . .
 . . . | 1 . 8 | . . .
 5 . . | . 3 . | . . 9
-------+-------+------
 . 3 . | 9 4 5 | . 7 .
 . . 1 | 8 . 3 | 2 . .
 . 5 . | 7 1 2 | . 3 .
-------+-------+------
 1 . . | . 9 . | . . 6
 . . . | 2 . 7 | . . .
 . . 8 | . . . | 4 . .


[tarek]

I've been away for a couple of days, I was hoping that I would have hundreds of puzzles to siv through, but apparantly not.....

I'll update the list with the latest, in the mean time here a snack

Code: Select all

 . 2 . | 8 . 4 | . 5 . 
 . 7 8 | 3 . 1 | 9 6 . 
 . . . | . . . | . . . 
-------+-------+------
 . . 2 | 7 . 6 | 3 8 . 
 . . . | . 1 . | . . . 
 . 9 7 | 4 . 8 | 5 . . 
-------+-------+------
 . . . | . . . | . . . 
 . 1 9 | 2 . 7 | 8 3 . 
 . 3 . | 6 . 9 | . 7 . 

Ocean, you seem to get the hang of it, all of your latest puzzles scored 9+, the 4th puzzle you submitted since my last post actually scored a 12

The puzzle that ab modified is an improvement over your second puzzle, so ab's will go to replace your puzzle#85

My snack puzzle (scoring a 4 ), will go to replace vidarino's #41,
the rest Ocean will be added to the list, & if no other member comes with puzzles scoring 4 & above(to replace 11 puzzles now), then I think we have reached our 100 with Ocean's & vidarino's extra puzzles (well, almost)......

tarek