Participant 1
Initial description: Within the colored grid blocks there is a checkerboard pattern bounded within a perimeter that is one colored grid square in width.
Final description: Within the colored grid blocks there is a checkerboard pattern bounded within a perimeter that is one colored grid square in width.

Participant 2
Initial description: Matched colors and created checkerboard pattern with border.
Final description: Matched colors and created checkerboard pattern with border.

Participant 3
Initial description: Put a checkered pattern in the shapes.
Final description: Put a checkered pattern in the shapes.

Participant 4
Initial description: Create a checkerboard of black squares within the colored shapes, while leaving a border on the outside.
Final description: Create a checkerboard of black squares within the colored shapes, while leaving a border on the outside.

Participant 5
Initial description: checkerboard leaving outer perimeter of one block.
Final description: checkerboard leaving outer perimeter of one block.

Participant 6
Initial description: nice
Final description: nice
