But the odds of winning the $2 million grand prize by solving MSCHF’s jigsaw puzzle? Two in 600,000 ... only of a few colors with no reference image. But it's not about the puzzle, it's about ...

[Ed. note: Spoilers follow for the Blue Prince picture puzzle below.] In most rooms, you’ll find two pictures. Generally speaking, these will be arranged with one on the left and one on the right.

Take the initials and last names of two ... mix all the letters together. You'll get the title and last name of another historical figure from approximately the same era. Who are these people ...

Moreover, it is intriguing to note that the body's immune system may actually develop a stronger immune response with a mix-and-match approach to vaccines than if you simply get two doses of the ...

The image below combines the two popular styles into one tricky puzzle. There are five holiday-related terms hidden in the festive illustration—see how long it takes you to spot them all.

Check out the puzzle ... their mix of logic and illusion, such brain teasers have become a reliable way to grab attention and spark conversation. So, how many blocks do you see in the image?