"It is easy to piece, but when set together forms a continuous and complicated design over the entire coverlet."
A handwritten copy of Nancy's pattern can be seen here.
I agree that this is a very easy quilt block to make.
The Triangle Puzzle block can be made from just two templates -a triangle and the center strip. You can download a copy here if you want to piece the block.
I paper pieced my 6" block because I feel it's more accurate to paper piece a small block and I think it's less work because I don't have to cut my pieces from templates. You can download my paper piecing pattern here. These are the three pieces to the pattern-
I like the graphic nature of this block and think it would make a great red and white quilt or any two color quilt for that matter. That's why I made my block red and white. Here's what a Triangle Puzzle quilt might look like-