Square in Square by Michèle Charpentier

Square in Square

Crochet
Thread ?
First 4 rounds = 3 cm
1.25 mm
405 yards (370 m)
38 x 38 cm
both US and UK
English Spanish

Alternating bands of filet blocks and chain loops. 50 g of size 20 thread

Pattern 21 in Magic Crochet.
Called “Cubre-Cojin Cuadrado” in Ganchillo Artistico.
Shown on cover of Crochet Monthly.