This unique granny square has one perforated triangle and other 3 triangles are solid.
This is a beginner friendly pattern. The only stitches one needs to know are the basic stitches, that is -single crochet, double crochet and triple crochet for this pattern.
Here hook size 4 mm (US G/6 or UK 8) is used. The tension is 22 single crochet x 30 rows = 10 cm/4” in width and 10 cm/4” height. The size of one square is 16 * 16 cm or 6.3 * 6.3 inch.

To make this granny square will need following material
Cotton DK weight yarn
Hook- 4mm
Scissors
Markers to mark important stitches
Yarn needle to weave in the ends