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The king's treasure
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The king's treasure

A powerful king kept all the treasures of his conquests in one of the most impregnable rooms of his castle. To ensure that no one but him could access the treasure, four guards took turns day and night to monitor the room flanked by a door with several locks. The king had handed out the keys of the different locks so that only he, accompanied by any one of his guards, could open it.

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Squares background

Look at this picture and say how many circles you can count. Solution Don't you see the 16 circles? Look closely, they are among the squares ...
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The illusion of Müller-Lier

Look at the hat in the picture. Is it taller than wide? Or is it wider than tall? Solution The width of the hat is exactly equal to its height. The cause of the deception is based on the effect produced by two perpendicular segments that, even though they are equal, the vertical will always appear greater, in an approximate proportion of 30%.
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Faces on the tree

Among the branches of the tree are some faces, would you know how to find them? Solution There are 10 faces in total, three above all that are somewhat smaller, another five in the middle and the two most visible below.
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Straight lines

Stare at the two lines ... do you think they are parallel lines? Solution Although they may not seem so, they are straight and totally parallel, what happens is that our eyes deceive us. The fine lines of the bottom that leave the black circle cause an illusion making us appear that the two thickest lines are separated by the central part.
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Globe

Can you see the hidden face under this illustration of the globe of James M. Glagg? Solution It is the face of a beautiful young woman.
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Parallel lines

Stare at the two lines ... do you think they are parallel lines? Solution Look carefully before answering, because perhaps the view deceives us again. These are two perfectly parallel horizontal lines.
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Accident

Poor guy! is falling down the stairs at the mouth of the subway ... Solution Luckily! It seems to be just a drawing made with chalk with 3D effect. Performed by Julian Beeber.
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Chessboard

This is a beautiful drawing of a chess board, do you see anything strange in it? Solution It is an impossible board because the same face is both upper and lower.
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Monks

The girl is walking at night and looking at the windows, but they appear some monks ... Solution It is a drawing of Rob Gonsalves, one of the current creators of optical illusions whose work is more spectacular.
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Train tracks

These train tracks seem to come out of the drawing, but isn't the perspective strange? Solution It is an optical illusion of drawing.
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Browsing

It seems that these ships sail by sea, or is it by air? Solution Drawing by Rob Gonsalves, is one of the current creators of optical illusions whose work is more spectacular.
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Women at the lake

In this drawing we see a lake that reflects the shadow of the trees, but they become women walking. Solution It is a drawing of Rob Gonsalves, one of the current creators of optical illusions whose work is more spectacular.
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Bridge and boats

Look at the bridge over the water, it seems that its arches are transformed into ships ... Solution It is a drawing by Rob Gonsalves.
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Circles or spirals

The following images show a series of spirals Or are they concentric circles? What do you think? Solution Actually these are concentric circles. The arrangement and contrast of colors makes them look spirals.
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Hell hell

They are already here, the demons have managed to get out of hell! Solution It is another optical effect created by an extraordinary artist in a subway station.
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