Our favourite professor has done it again! Akiyoshi has created showcased illusory pattern titled “Chidori” (which is some kind of a bird if I understood it correctly), which gives an impression that the inner block is moving in upper-diagonal direction. To amplify the effect, simply scroll the page up and down slightly. After a while, you’ll see the inner block floating on top of its background. If you’re lucky, you’ll experience the 3D stereoscopic effect without having to go cross-eyed or wearing those clumsy 3D glasses!