Scheme 

"Scheme" is a 1958 lithograph by Dutch graphic artist M.C. Escher. Known for his intricate tessellations and impossible structures, Escher utilizes a grid system and repeated geometric shapes to create a sense of order and complexity. This particular work features a series of interconnected triangles and squares that create a dynamic visual pattern, reminiscent of an architectural blueprint. The use of letters and numbers further enhances the mathematical and structural aspect of the design, making it an intriguing example of Escher's exploration of space and perception.