GridWits

X-Wing

Hard Used by Smart Hint

A height's only two candidate cells line up in the same two columns (or rows) across two rows (or columns) — eliminate it everywhere else in those columns or rows.

2 3 3 4 1 3 4 2 3 5 1 3 3 5 3 4 5 1 2 3 1 3 5 3 4 5

How it works

  1. Follow height 3. In row 1 it fits in only two cells, and in row 3 it fits in only two — and both rows point at the SAME two columns.
  2. The four tinted cells make a rectangle. Whichever corner row 1's 3 takes, row 3 is pushed to the opposite corner: the two 3s always end up one per column.
  3. So both of those columns already have their 3 accounted for by these two rows.
  4. Strike 3 from every other cell in the two columns. The rows themselves gain nothing — a fish pays out sideways, in the lines it crosses.