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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. Minimal
7. 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 puzzle
Score = 2 ==> Requires other than a Jellyfish to solve
Score >=3 ==> Requires a Jellyfish to solve
Score >=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.
Latest compiled lists can be downloaded through the following links:
Pure Jellyfish puzzle collection: Score >=4
Jellyfish puzzle collection: Score >=3
tarek
