A 6x6 grid features two different types of pieces: x's and o's. You are given three separate views of the same grid in a step by step progression. The number of pieces gradually decreases with each step and also change in location. This is the layout of the grid progression: http://www.eskimo.com/~miyaguch/hoeflin/n36.gif [Broken] So what is the fourth figure in this series? Meaning what would be the placement of the final piece(s) in the forth step of the 6x6 grid?