Ice maker, refrigerator, and method for controlling the refrigerator

A method for controlling a refrigerator, the refrigerator comprising an ice tray configured to receive cold air to make ice and provided with a plurality of ice-making cells, the plurality of ice-making cells being arranged in a plurality of columns, each column comprising two or more ice-making cells, the method comprising:

• supplying water to the ice tray;
• rotating the ice tray in a first direction by a set angle or for a set time after the supplying of the water is completed;
• and
• rotating the ice tray in a second direction opposite to the first direction to allow the ice tray to return to an initial position after the rotating of the ice tray in the first direction is completed.