Intermediate.

Uses about 1000 yards of size 20 thread “split with a little more than half of the total in brown and the rest evenly divided among beige, pink, and light yellow. A steel crochet hook US size 6 (1.5) mm or size for gauge. A pillow 16” (41 cm) square.”

Pattern 7, Trendy Mosaics - Tessera, page 17 in Decorative Crochet #104.

Pattern 5, Mosaic, page 10, in Crochet Monthly #309.

Puzzle in Crochet Monthly #189
26 Tic-Tac-Toe in Magic Crochet #98
Tesselles in the Tendance Mosaique section of 1000 Mailles #275.
Called “Mosaico tricolor” in Ganchillo Artistico.
Called “Eucalyptus” in Crochet Monthly #327.