Franken Jellyfish

The Franken Jellyfish is a fish pattern of the Franken Fish type. This type allows either the defining set or the secondary set to contain boxes, as well as lines.

Franken Jellyfish rrrb-cccc

This is a fish diagram of a Franken Jellyfish with a defining set of 3 rows with 1 box and a secondary set of 4 columns.

n n / n n / e e	/ n / / n /   e	n / / n / / e
e e   n n / e e	e   / n /   e	e     n / / e
n n / n n / n n /

Franken Jellyfish rrbb-cccc

Here we see a Franken Jellyfish with a defining set of 2 rows with 2 boxes and a secondary set of 4 columns.

n n / e e   e e	n n / e e   e e	/ / /
n n / e e   e e	n n / e e   e e	/ / /
n n / n n / n n /	n n / n n / n n /

In this example, the defining set contains rows 2 & 8 and boxes 4 & 6. The secondary set contains columns 2, 3, 7 & 8. All the candidates in the defining set (marked with X) are located inside the secondary set. The remaining candidates from these 4 columns can be eliminated.

Configurations Which Look Like Franken Jellyfish but Are Not

This configuration using 2 non-aligned boxes dissolves into 3 Locked Candidates steps.

n n / n n / e e	n n / n n / e e	/ / / / / /
e e   e e   e e	n n / n n / n n /
n n / n n / n n /	e e   e e   e e

Solving path

• Locked Candidates 1 in box 3 + row 3: eliminate remaining candidates in row 3.
• Locked Candidates 2 in box 1 + 3 with columns 1 + 2: eliminate candidates in box 4 for columns 1 + 2.
• Locked Candidates 2 in box 2 + 5 with columns 4 + 5: eliminate candidates in box 8 for columns 4 + 5.

A configuration with 2 boxes sharing the same 2 columns (swap boxes 4 and 5 in the diagram above) would not work either, because a hidden single is detected in the remaining column intersecting those boxes. This isolates the 2 boxes from the 2 rows.

See Also

• Fish
• Jellyfish
• Franken Fish
• Franken Swordfish