I called it the Arrow because that is what it reminds me of.
Step 1: Materials You Will Need.
A crochet hook (I used an H, but you could use what works best for you and your yarn.)
Two colors of yarn, (This is worsted, but you could use whatever.)
Step 2: Glossary of Terms.
Sl st: slip stitch
Dc: double crochet
Step 3: Starting the Square
Ch 3 (counts as first) and Dc 15 into the hole.
Do not turn your work.
Step 4: Working the First Color
Dc 1 in the next 3 stitches, dc 2 ch 1 dc 1 in next stitch, Dc 1 in next 3 stitches.
In the next stitch dc 2.
Do not finish off your last Dc. Leave the last two loops un-worked.
Step 5: Working the Second Color
Ch 1 and dc 2 in the same space.
Dc 1 in next three stitches, dc 2 ch 1 dc 2 in next stitch, dc 1 in next 3 stitches. Dc 2 in the same stitch as the first double crochet of the first color, ch 1 and sl st to the first stitch.
Turn your work.
Do not cut the yarn of either color.
Step 6: Working the Next Round.
Ch 3 and dc 1 in the ch space.
Work all Dc and in the ch space work, dc 2 ch 1 dc 2, to the next multicolored corner.
Dc 2 and pick up the first color the same way you picked up the color previously.
Ch 2, work all Dc and in ch space work, dc 2 ch 1 dc 2, to the next multicolored corner, Dc 2 in the first ch space, ch 1 and sl st to first.
Turn your work!
Repeat this step as many times as you like to get the size you want.