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Finned Jellyfish

Hard

Almost a Jellyfish, but with an extra cell or two called Fin Cells that break the 4x4 pattern.

How it works

4
6
8
9
7
5
1
4
6
4
1
3
5
1
5
8
2
2
8
4
6
7
5
3
4
7
9
1
3
4
1
3
4
7
8
5
4
7
8
1
4
2
6
4
6
7
1
3
4
9
2
4
6
7
8
3
9
2
4
6
7
8
1
4
6
4
5
7
5
6
3
9
8

Find the first Column

Digit 4 appears in two, three, or four cells in this Column.

4
6
8
9
7
5
1
4
6
4
1
3
5
1
5
8
2
2
8
4
6
7
5
3
4
7
9
1
3
4
1
3
4
7
8
5
4
7
8
1
4
2
6
4
6
7
1
3
4
9
2
4
6
7
8
3
9
2
4
6
7
8
1
4
6
4
5
7
5
6
3
9
8

Find another matching Column

This Column also has 4 in two cells, and in the same Rows.

4
6
8
9
7
5
1
4
6
4
1
3
5
1
5
8
2
2
8
4
6
7
5
3
4
7
9
1
3
4
1
3
4
7
8
5
4
7
8
1
4
2
6
4
6
7
1
3
4
9
2
4
6
7
8
3
9
2
4
6
7
8
1
4
6
4
5
7
5
6
3
9
8

Find the third matching Column

This Column lines up too, but it already has an extra 4 candidate.

4
6
8
9
7
5
1
4
6
4
1
3
5
1
5
8
2
2
8
4
6
7
5
3
4
7
9
1
3
4
1
3
4
7
8
5
4
7
8
1
4
2
6
4
6
7
1
3
4
9
2
4
6
7
8
3
9
2
4
6
7
8
1
4
6
4
5
7
5
6
3
9
8

Find the fourth matching Column

This Column lines up too. All four Columns share exactly four Rows.

4
6
8
9
7
5
1
4
6
4
1
3
5
1
5
8
2
2
8
4
6
7
5
3
4
7
9
1
3
4
1
3
4
7
8
5
4
7
8
1
4
2
6
4
6
7
1
3
4
9
2
4
6
7
8
3
9
2
4
6
7
8
1
4
6
4
5
7
5
6
3
9
8

Almost a Jellyfish

All the cells line up across four Columns and four Rows, just like a normal Jellyfish.

4
6
8
9
7
5
1
4
6
4
1
3
5
1
5
8
2
2
8
4
6
7
5
3
4
7
9
1
3
4
1
3
4
7
8
5
4
7
8
1
4
2
6
4
6
7
1
3
4
9
2
4
6
7
8
3
9
2
4
6
7
8
1
4
6
4
5
7
5
6
3
9
8

Spot the Fin

These Columns are almost a Jellyfish.But the Fin cell has no connection to the other Columns.

Note

This presense of the Fin cell reduces the number of eliminations we can make.

4
6
8
9
7
5
1
4
6
4
1
3
5
1
5
8
2
2
8
4
6
7
5
3
4
7
9
1
3
4
1
3
4
7
8
5
4
7
8
1
4
2
6
4
6
7
1
3
4
9
2
4
6
7
8
3
9
2
4
6
7
8
1
4
6
4
5
7
5
6
3
9
8

Eliminations must see the Fin

In a normal Jellyfish, we can eliminate other 4's in the shared rows.A Finned Jellyfish is restricted to only cells that share a with the Fin.

4
6
8
9
7
5
1
4
6
4
1
3
5
1
5
8
2
2
8
4
6
7
5
3
4
7
9
1
3
4
1
3
4
7
8
5
4
7
8
1
4
2
6
4
6
7
1
3
4
9
2
4
6
7
8
3
9
2
4
6
7
8
1
4
6
4
5
7
5
6
3
9
8

Eliminate in the Fin box

We can safely remove 4 on shared Rows but only within the Fin .

All Hints

Unlock hints to find
the Finned Jellyfish on your board.

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