Magical Mystery - Clue 5

4-Patches

Welcome to Clue 5 of our Magical Mystery Block Quilt-Along.  

If you are just coming to the party, you can catch up here and here and here and here and here.

For this clue you will be using the 2-1/2" squares 
and the 2-1/2" triangle squares you made in Clue 4.

Each 4-patch unit will have two triangle squares (HSTs), one light square, and one dark square.

Make four identical 4-patch units for every pair of FQs you cut.
Press your twosies toward the solid square so that the seams will nest.

Press toward the solid fabric square

I highly recommend that you "spin" the final seam.  Otherwise, press it open.

Spin center seam

Edyta Sitar gives an excellent demo of 4-patch spinning here.
Some sources recommend snipping stitches at the intersection,
but if your stitch length isn't overly tight and if you didn't "web" your pieces,
you should be able to simply twist them apart.

TIPS
I find it helpful to stack all my pieces before I start sewing.

I double check against the illustration to make sure I have not turned a HST the wrong way.
A good check is to notice you will never be sewing the same two fabrics together;
that is, you will always sew light to dark or dark to light.

This is the LAST clue!

Once you get the 4-patches made, fiddle with your pieces to see if you can solve the mystery.
Remember, these same pieces make two different blocks, A and B.
Also, remember the rail units you pressed to the light and labeled "A".
You should be able to make two A blocks and two B blocks.
Setting options allow for using all A or all B,
but the most interesting settings use a combination of both A and B.

Let's plan to link up again on Monday with your possible solutions.
If you don't get to this right away, I'll catch up the links whenever I see your post.

I will reveal the final solution Monday night, along with setting options.
Oh, and there is a BONUS third block option!

Happy Stitching!