Concentration test: can you find all the boxes?

At first glance, everything seems easy: a grid, some lines, and the answer seems obvious. Yet, this is often where we get trapped. Why? Because our brain loves to simplify images and omit hidden details. As a result, we stop too quickly, convinced we’ve seen it all. What if, in fact, the key was to slow down, observe differently, and let logic take over?

Why these grids trap us

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The problem is like a  puzzle game  : you get excited about it, then discover there are multiple levels. The 3×3 grid, for example, doesn’t just contain small, conspicuous squares. It also contains  discrete combinations  : medium-sized squares made up of 2×2 squares, and a large square encompassing the whole thing. If you don’t think about these groupings, you’re missing half the story. The good news is: there’s a simple way to count everything without missing anything.