Here's a magic eye puzzle type thing I found while checking my Entrecard inbox. Generally eye puzzle and/or 3D stuff drives me flipping crazy. This one is no exception.

Take a look at the image below. It's a checkers (or chess) style board with a large cylinder sitting on it. Take a good look at the image. Pay particular attention to the two sections marked 'A' and 'B'. Now answer this, are blocks 'A' and 'B' the same colour?

Image source: Blogsters Guild.

After staring at this for a while, there was no way that I could say 'A' and 'B' were the same colour, no matter how I approached it. Being the untrusting, sometime skeptic that I am, I opened the image in Photoshop and used the 'eye dropper' tool to find out what colour the two blocks were. Sure enough, they were both exactly the same colour (HEX # 787878). I have to admit, it's quite cool, but at the same time I think it may have fried my brain.