There are truly only 6 blocks in this quilt.  Each block is made twice with opposing colors.  For instance if the center block is color 1 in your first block, it will be color 2 in your second block.  I will be calling the fabrics either neutral, color 1 or color 2.  You can assign these names based on your own fabrics.  The color 1 and color 2 will be the opposite for the second of each of the blocks.  Keeping the colors straight won’t matter too much until we get to the sashing and cornerstones.  Border fabrics will be referred to as Inner border and Outer border.

For the Yankee Puzzle block you will need to cut the following:

Neutral

Two 4″ x WOF strips — subcut into 16 4″ squares.  Save the remainder of the 4″ strip.

One 12 1/2″ x WOF strip — subcut four 1 1/2″ pieces.  Save the remainder of the 12 1/2″ strip.

One 14 1/2″ x WOF strip — subcut four 1 1/2″ pieces.  Save the remainder of the 14 1/2″ strip.

Color 1

One 4″ x WOF strip — subcut into 8 4″ squares.  Save the remainder of the 4″ strip.

Color 2

One 4″ x WOF strip — subcut into 8 4″ squares.  Save the remainder of the 4″ strip.

Each of the neutral pieces will be paired with each of the colored pieces to make half square triangles.

To make half square triangles (HST) draw a pencil line from corner to corner using a straight edge.

Sew a scant 1/4″ away from both sides of the line.

Cut between the two seams

Press each unit open with the seam allowance facing the darkest of the two fabrics.

Trim each block to exactly 3 1/2″ square.

Arrange the blocks as shown in the picture below

After you have the pieces sewn together add the 1 1/2″ x 12 1/2″ to two opposite sides and the 1 1/2″ x 14 1/2″ to the remaining sides.