This new brainteaser is designed to put your eye for detail to the test.
Within the image there are a number of hidden triangles, and on average it takes people over six minutes to correctly count them all. See if you can do it any quicker.
Some of the triangles are obvious, but the more you count the more you spot - and the more you miss. If you want a clue - the answer is probably much higher than you think.
