To move or not to move the object (if not in three or more rows)?

Question

Unity

Three in a row game. I started learning Unity, I don't know much yet.
When moving (screen) 1 object to 2 object, it will find a match and the fruit will fall down.
Implement such a condition: when moving (screen) 3 objects to 4 objects, it does not find a match and should not move these fruits (or move them back).

Screen

Here is a piece of code where the main function occurs when the mouse is pressed.

spoiler

.....
if (GetAllAdjacentTiles().Contains(previousSelected.gameObject))
                {
          SwapSprite(previousSelected.render);
          previousSelected.ClearAllMatches();
          previousSelected.Deselect();
          ClearAllMatches();
        }
                else
                {
          previousSelected.GetComponent<Tile>().Deselect();
          Select();
        }
.......

Here is the link where the game came from

spoiler

wnfx.ru/kak-sozdat-igru-v-unity

Answer 1

Reread your question and edit it, please. I re-read it 3 times and still do not understand what you need.