As in the other fairy chessboards described above, the pieces in pillow chess have a greater command of the board than in traditional chess; see FIGURE 3. For example, the knight at gl can reach hl by moving two squares to the right and one square down. The bishops travel along parallel lines: if the bishop moves from d7 through e8, it re appears in c8, travelling along the parallel line through b7. (The bishops don't bounce off the top edge as in the reflecting queens introduced by Klamer [37]; for more on reflecting queens, see articles by Guy [27, Setion C18] or Gardner [24, Chapter 15], and the Klamer's Maths Review [38] of Huff's paper.) To get used to pillow chess, we suggest considering the pillow chess problem posed in FIGURE 4; the solution is given at the end of the paper. When considering this problem, it may assist the reader to imagine what the game looks like "across the edges" of the board; such an expanded view is shown in FIGURE 5.