## A Pure Jellyfish Collection

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

### A Pure Jellyfish Collection

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`Rules(v6.0): 1. Valid vanilla 9*9 sudoku 2. NEEDS a Jellyfish to solve after applying the following set of techniques:    2.1. Singles (Hidden/Naked)    2.2. Box-Line/Line-Box interactions    2.3. Subsets (doubles,triples,quads) (Hidden/Naked)    2.4. X-Wing   2.5. Swordfish 3. Solved using the following set of techniques:    3.1. Singles (Hidden/Naked)    3.2. Jellyfish (JF) 4. Jellyfish needed (Point 2)>=Jellyfish needed (Point 3), achieved electronically through solving 1000 isomorphs of the same puzzle according to:    a. Point 2 (1000 isomorphs)    b. Point 3 (1000 isomorphs)    minimum number of jellyfish recorded in "a" is compared to    the minimum number of jellyfish recorded in "b"5. Symmetric (I-VII) 6. Minimal7. NEEDS a Jellyfish to solve after applying the following set of techniques:   7.1. Singles (Hidden/Naked)    7.2. Box-Line/Line-Box interactions    7.3. Subsets (doubles,triples,quads) (Hidden/Naked)    7.4. X-Wing    7.5. Finned X-Wing (incl. Sashimi)    7.6. Simple Colouring    7.7. XYZ-Wing    7.8. XY-Wing    7.9. Swordfish    7.10. Finned Swordfish (incl. Sashimi)    7.11. Uniqueness (1-4)    7.12. Empty Rectangle   7.13. BUG+1   This is approximated electronically by using gsf's sudoku   -q{FNB2B3H2T2T3H3T4H4W2W3X}{W4}-G I2>0 options--Puzzles will be checked against the sequence of rules starting from 1 & ending at 7.--Checking will stop when a puzzle fails to satisfy a ceratin rule.--Each Puzzle will acquire a Score equal to the highest rule being checked against.--if a puzzle passes all rules (1-7) then it will score an "8"Score interpretaion:Score = 1 ==> Invalid puzzleScore = 2 ==> Requires other than a Jellyfish to solveScore >=3 ==> Requires a Jellyfish to solveScore >=4 ==> Pure Jellyfish (Pat's Extra Lenient criteria)Score >=5 ==> Pure Jellyfish (Tarek's Lenient criteria but with Symmetry & Minimality not obligatory)Score >=6 ==> Pure Jellyfish (Tarek's Lenient criteria with Minimality not obligatory)Score >=7 ==> Pure Jellyfish (Tarek's Lenient criteria)Score = 8 ==> Pure Jellyfish (Tarek's Rigorous criteria)`

Following ocean's "A Pure X-Wing collection", I decided to start this thread.
The rules above are not written in stone. Any suggestions will be discussed & changes can be made.

The aim is to create puzzles that provide many "Red herrings" when only Jellyfish are needed.

Pure Jellyfish puzzle collection: Score >=4
Jellyfish puzzle collection: Score >=3

tarek
Last edited by tarek on Sun Jul 04, 2010 11:07 am, edited 12 times in total.

tarek

Posts: 3181
Joined: 05 January 2006

Sounds interesting.....
simdav

Posts: 3
Joined: 16 December 2007

1st Puzzles:
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` 7 . . | . 2 . | . . .   . . 1 | . . 9 | . 6 .   . 8 . | 4 . . | 2 . .  -------+-------+------  . . 6 | . . . | . 5 .   9 . . | . . . | . . 1   . 3 . | . . . | 7 . .  -------+-------+------  . . 2 | . . 6 | . 9 .   . 4 . | 7 . . | 8 . .   . . . | . 3 . | . . 6   7 . . | . 6 . | . . .   . . 3 | . . 1 | . 8 .   . 2 . | 7 . . | 6 . .  -------+-------+------  . . 8 | . . . | . 4 .   1 . . | . . . | . . 3   . 9 . | . . . | 2 . .  -------+-------+------  . . 6 | . . 8 | . 1 .   . 5 . | 2 . . | 7 . .   . . . | . 7 . | . . 8   6 . . | . 7 . | . . .   . . 1 | . . 5 | . 3 .   . 2 . | 4 . . | 6 . .  -------+-------+------  . . 3 | . . . | . 1 .   9 . . | . . . | . . 2   . 4 . | . . . | 7 . .  -------+-------+------  . . 9 | . . 3 | . 5 .   . 7 . | 6 . . | 9 . .   . . . | . 1 . | . . 3  `

tarek

Posts: 3181
Joined: 05 January 2006

### re: pure Jellyfish

tarek wrote:
Rules:

1. Valid vanilla 9*9 sudoku
2. Symmetric (I-VII)
3. Symmetrically Minimal

4. Solvable using: (gsf's -qFNW4-G)
4.1 Singles (Hidden/Naked)
4.2 Jellyfish
5. Not solvable using:
5.1 Singles (Hidden/Naked)
5.2 Box-Line/Line-Box interactions
5.4 X-Wing
5.5 Finned X-Wing (incl. Sashimi)
5.6 Simple Colouring
5.7 XYZ-Wing
5.8 XY-Wing

5.9 Swordfish
5.10 Finned Swordfish (incl. Sashimi)
5.11 Uniqueness (1-4)
5.12 BUG+1

Following Ocean's "pure X-Wing collection", I'm starting this thread.
The rules above are not written in stone. Any suggestions regarding them would be discussed, and changes can be made.
The aim is to create puzzles the provide many red herrings when only Jellyfish are needed.

hey tarek, i know you love these extreme challenges -- but i must say i'm rather amazed that you found any puzzles satisfying these tough rules -- i have coloured those rules which i personally would drop

~ Pat

Pat

Posts: 3870
Joined: 18 July 2005

I am happy to change the rules.......

The reason that I added these limitations is that I think MANY would use these techniques PRIOR to looking for the Jellyfish (I might be wrong)...

These players would not encounter the Jellyfishes as frequent as you...

So these tough rules aim to satisfy a wider audience.

What do you think?!!

tarek

tarek

Posts: 3181
Joined: 05 January 2006

Rules have modified above to allow more valid puzzles.

tarek

tarek

Posts: 3181
Joined: 05 January 2006

### Re: A Pure Jellyfish Collection

tarek wrote:
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`Rules:1. Valid vanilla 9*9 sudoku2. Symmetric (I-VII)3. Symmetrically Minimal4. Solved using the following set of techniques (gsf's -qFNW4-G):   4.1. Singles (Hidden/Naked)   4.2. Jellyfish (JF)5. "Lenient" Category: Not solvable using the following set of techniques (gsf's -qFNBTHW2W3-G):   5.1. Singles (Hidden/Naked)   5.2. Box-Line/Line-Box interactions   5.3. Subsets (doubles,triples,quads) (Hidden/Naked)   5.4. X-Wing   5.5. Swordfish`

for my solver 2007-12-18 (-Q negation bug fixed)
these options should capture rules 1-5
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`-qFNW4-G -Q'!FNBTHW2W3-G' -e 'valid&&symmetric&&minimal'`

-Q provides additional constraints that must be met
it can be an expression of constraints using ( ! || && ^ ) grouping and logic operators
gsf
2014 Supporter

Posts: 7306
Joined: 21 September 2005
Location: NJ USA

My 1st Puzzle fails point 7

Batches of JF following singles =2
Batches of JF following "Lenient" category techniques =1

tarek

tarek

Posts: 3181
Joined: 05 January 2006

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

tarek

tarek

Posts: 3181
Joined: 05 January 2006

daj95376 in 'Jellyfish, rarest technique' thread wrote:
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` . 4 . | . 2 8 | . 7 1   8 7 . | 6 . . | . 2 .   . . . | . . . | . . .  -------+-------+------  . . 4 | 8 . . | 2 6 .   . . 1 | . 4 . | 9 . .   . 8 6 | . . 2 | 4 . .  -------+-------+------  . . . | . . . | . . .   . 6 . | . . 9 | . 4 3   1 3 . | 2 7 . | . 9 .   2 . . | . . 3 | 5 8 .   . . . | . 2 . | . . 1   . . . | 4 . 5 | 6 . .  -------+-------+------  . . . | 9 . 4 | . 6 8   . . 5 | . 1 . | 9 . .   6 1 . | 8 . 2 | . . .  -------+-------+------  . . 1 | 5 . 8 | . . .   3 . . | . 4 . | . . .   . 2 6 | 3 . . | . . 4  `

tarek

tarek

Posts: 3181
Joined: 05 January 2006

### 4 from daj95376

in the Topic "Jellyfish ~ the rarest one method",
daj95376 (2006.Oct.1) posted 18 puzzles

4 of them qualify as "pure Jellyfish" puzzles
under my rules ( which tarek must consider extra-lenient )
• puzzle number ( 1 - 18 ) in the daj95376 list
• the puzzle
• number of clues
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`01,.......63..763.48...3..8..1.3...41.5.1..8..3.5.63...7.2..7..3...74.562..65.......,3107,.4..28.7187.6...2............48..26...1.4.9...86..24............6...9.4313.27..9.,2911,2....358.....2...1...4.56.....9.4.68..5.1.9..61.8.2.....15.8...3...4.....263....4,2913,4..2.7.8...3..85.6.786...4.2.....61.....2.....17.....4.5...346.6.15..2...3.1.2..8,31`

Pat

Posts: 3870
Joined: 18 July 2005

• puzzle number in this Topic ( 1-9 ) -- my numbering
• the puzzle
• number of clues
• puzzle source
01,7...2......1..9.6..8.4..2....6....5.9.......1.3....7....2..6.9..4.7..8......3...6,22,tarek (2007.Dec.18)
02,7...6......3..1.8..2.7..6....8....4.1.......3.9....2....6..8.1..5.2..7......7...8,22,tarek (2007.Dec.18)
03,6...7......1..5.3..2.4..6....3....1.9.......2.4....7....9..3.5..7.6..9......1...3,22,tarek (2007.Dec.18)

04,...197....4.....7...9...3..8...3...27..9.2..43...6...1..2...4...1.....9....524...,24,tarek (2007.Dec.19)
05,.5.....7.2.......6...456.....7.3.4....65.12....9.7.1.....812...9.......5.1.....2.,24,tarek (2007.Dec.19)

06,.......63..763.48...3..8..1.3...41.5.1..8..3.5.63...7.2..7..3...74.562..65.......,31,daj95376 (2006.Oct.1)
07,.4..28.7187.6...2............48..26...1.4.9...86..24............6...9.4313.27..9.,29,daj95376 (2006.Oct.1)
08,2....358.....2...1...4.56.....9.4.68..5.1.9..61.8.2.....15.8...3...4.....263....4,29,daj95376 (2006.Oct.1)
09,4..2.7.8...3..85.6.786...4.2.....61.....2.....17.....4.5...346.6.15..2...3.1.2..8,31,daj95376 (2006.Oct.1)

Pat

Posts: 3870
Joined: 18 July 2005

Is this Pure Jellyfish ?

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` 1 . . | . . . | . . . . 2 . | 3 4 5 | . . . . . 5 | . . . | 4 . . - - - + - - - + - - - . 6 . | 7 . . | . 3 . . 8 . | . 1 . | . 5 . . 1 . | . . 9 | . 4 . - - - + - - - + - - - . . 7 | . . . | 5 . . . . . | 2 8 3 | . 6 . . . . | . . . | . . 8`
• 100000000020345000005000400060700030080010050010009040007000500000283060000000008
TTHsieh
TTHsieh

Posts: 1390
Joined: 13 July 2007

TTHsieh wrote:Is this Pure Jellyfish ?

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

sorry, no, can't be solved by Jellyfish + "singles"

Pat

Posts: 3870
Joined: 18 July 2005

Pat wrote:
TTHsieh wrote:Is this Pure Jellyfish ?

sorry, no, can't be solved by Jellyfish + "singles"

TTHsieh's puzzle does require line\box and box\line interactions, aka locked candidates, but IMO that is pressing "pureness" too far. After all, there is very little difference between these two 1-fish.
Code: Select all
` . . . | . . . | . . .      . . . | . . . | . . . / x / | / / / | / / /      x x x | / / / | / / / . . . | . . . | . . .      . . . | . . . | . . .-------+-------+-------    -------+-------+-------  . . . | . . . | . . .      . . . | . . . | . . . hidden single              line\box interaction`

(Yes, I know you're using tarek's rules.)
ronk
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Joined: 02 November 2005
Location: Southeastern USA

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