X-Wing

Nasıl Çalışır

X-Wing is an advanced technique. When a candidate appears in exactly two cells in each of two different rows, and those cells are in the same two columns, the candidate can be eliminated from all other cells in those two columns (and vice versa for columns/rows).

Adım Adım

1. Find a candidate that appears in exactly two cells in two different rows.
2. Check if those four cells form a rectangle (same two columns).
3. Eliminate that candidate from all other cells in those two columns.