The Jellyfish technique is an advanced Sudoku solving strategy that helps you eliminate candidates in certain complex scenarios. It is an extension of the Swordfish technique, involving a 4x4 grid pattern.
How to Identify a Jellyfish
A Jellyfish pattern consists of the following characteristics:
Four rows (or columns) that each contain a candidate number in only two or three cells.
The candidate numbers in these rows (or columns) must be aligned in four columns (or rows).
How the Jellyfish Technique Works
If the above conditions are met, you can eliminate the candidate number from any other cell in the four columns (or rows) that contain the aligned candidates.
Example of the Jellyfish Technique
Tips for Spotting Jellyfish
Look for rows or columns with only two or three occurrences of a candidate number.
Check if these candidates are aligned in four columns or rows.
Remember that the Jellyfish technique is an extension of the Swordfish and X-Wing techniques.
