Ridged Square

A Tunisian Crochet pattern

I used less than 1 skein Cotton Maid Cotton 8 (DK weight) and a 10" Tunisian size H hook. My finished square is about 9.5". Your square will be bigger (about 12") if you use worsted weight yarn. I would suggest a 12" or 14" I hook with worsted.

Foundation Row: Ch 41 loosely. Insert hook in 2nd ch from hook, YO, draw up a loop. Repeat in each ch across, leaving all loops on hook (41 loops on hook).

Return Pass: YO, draw through one loop on hook. *YO, draw through 2 loops on hook.* Rep * to * until only 1 loop remains on hook.
NOTE: Repeat Return Pass after each row.

Row 1: Tps: Insert hook from back of work, under 2nd vertical loop from hook, YO, draw up a loop. Repeat in each vertical loop across, leaving all loops on hook, until you reach the last one. Insert hook from back of work under 2 strands of the vertical loop at the end, YO, draw up a loop (41 loops on hook).
Return Pass

Row 2: Tss: Insert hook under front of 2nd vertical loop from hook, YO, draw up a loop. Repeat in each vertical loop across, leaving all loops on hook, until you reach the last one. Insert hook under 2 strands of the vertical loop at the end, YO, draw up a loop (41 loops on hook).
Return Pass

Row 3: Tks: Insert hook through 2nd vertical loop from hook from front to back of work, YO, draw up a loop. Repeat in each vertical loop across, leaving all loops on hook, until you reach the last one. Insert hook under 2 strands of the vertical loop at the end, YO, draw up a loop (41 loops on hook).
Return Pass

Row 4: Tss: Insert hook under front of 2nd vertical loop from hook, YO, draw up a loop. Repeat in each vertical loop across, leaving all loops on hook, until you reach the last one. Insert hook under 2 strands of the vertical loop at the end, YO, draw up a loop (41 loops on hook).
Return Pass

Repeat rows 1-4 ten times, or until your piece is just about square. Repeat Row 1 one more time. After the last return pass, you can finish off by cutting the yarn and pulling it through the last stitch, but for a fuller, neater edge, make a finishing row as follows.

Finishing Row: With last loop of last return pass still on hook, *insert hook into next stitch, YO, draw through 2 loops*. Repeat from * to * to end. Fasten off remaining loop.

I added 2 rounds of sc around my square (1st round had 40 sc on each side with 3 sc in each corner).