Ch. 31 (or any multiple of 2, +1 for the turning chain).
SC in the second stitch back bump to create a neat edge (30 sts)
Row 1: SC, *SC in BLO, DC in BLO* repeat** until last stitch, SC in last stitch. Ch1 and turn.
Rows 2-x: Repeat Row 1 until you have a square, equal height and width. Check as you go along by folding diagonally; when it is square, it will fold in half nicely to make a triangle.
To finish, add one last row: SC across (30 sts)
Finished Size is Approximately 9.5″ x 9.5″
Because I started the first row in the “back bump” and ended with a SC row, I did not add a border because all sides have neat edges.