These logic puzzles are so fun! Each piece is 1.5″ x 1.5″ and contains rows of like colors. Each row has little sections that shift and slide through the puzzle. The goal is to mix up all the colored tiles and to arrange them back to rows of each color. You can move the pieces by rotating the rows, and sliding the little colored squares up and down and side to side. It has one empty spot and works kind of the the old slide number puzzle mixed with a puzzle cube. This classic toy is a fun brain teaser that is perfect for downtime, travel, or just a spinning fidget.