Finned X-Wing
Fish & Wings19 / 32An X-Wing with a blemish — the fin limits the damage.
Almost an X-Wing: one of the two rows carries one or two extra candidates — the fin — sitting in a single box. The clean eliminations don't all survive, but some do.
Split into cases: if the fin is false, the clean X-Wing works. If the fin is true, it claims its box. Cells caught by both cases — X-Wing eliminations inside the fin's box — are gone either way.
See it in action
Step 1 of 4
The setup
When an X-Wing almost works but one row has a stray candidate or two, check whether the strays share a box with one of that row's pattern columns. Step through this real position to see it happen.
Practice
Find the finned X-Wing and remove its digit from the covered cells inside the fin's box.
Drill 1 of 29Tap a cell, then the candidate digit you want to remove.