Gennie's Half-Square

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any color yarn
any size hook

pattern:

ch 6, join w/ sl st to form ring
Row 1: ch 4, (3 dc, ch 1, 3 dc, ch 1, dc) in ring
Row 2: ch 3, turn, 3 dc in ch-1 sp, (3 dc, ch 2, 3 dc, ch 1) in next ch-1 sp, 3 dc in next ch-1 so, dc in 3rd beg ch
Row 3: ch 3, turn, (2 dc bet 1st & 2nd dc of prev row, ch 1, (3 dc, ch 1) in ea ch-1 sp to corner, (3 dc, ch 2, 3 dc, ch 1) in corner ch-sp, (3 dc, ch 1) in ea ch-1 sp to end, 2 dc bet last dc and beg ch, dc in 3rd beg ch
Rep Rnd 3 to desired size.