In this optical illusion, the structure of the pyramid could appear hollow from one angle. The actual pyramidal shape is not visible due to the illusion created by our eyes. A similar illusion can be experienced in images too. The birds' illusion is created by a pattern of pictures of birds. The spaces between the pictures of these birds resemble the shape of birds; however, the pattern is automatically created without any attempt to make it the way it looks. An optical illusion created by Akiyoshi Kitaoka, Primerose's field is formed of pictures of Primeroses at vertices of squares. The pattern creates an illusion of a wave and is also one of the more amazing mind tricks. The 'Bulge' is a pattern created in a checkered board format. It is an optical illusion created by drawing smaller squares in the bigger squares which are at the center of the design. The lines formed by these patterned squares appear to be slanting and thus, an optical illusion of a bulge is created. The information presented in the following paragraphs deal with how to solve these mind tricks and puzzles, and in the process of solving them, how we can use them in problem-solving in our day-to-day lives. Solving motivational mind tricks ensures that the mind is motivated to take some action by thinking and talking about it positively. Writing down thoughts also help in motivating the mind. The technique appears to be simple; however, it works wonders. The technique or trick, whatever it is, has the potential to actually change the chemicals that affect the thought process in question. Memory tricks are used to remember or memorize many things at a time. For example, if one has to memorize words such as pen, bag, book, school, etc., a nice and short story can be woven around these words. Perfectly fitting these words in the story automatically stores them in the memory. Repeating the story a few times makes sure that these words are kept in the memory for a long time. Solving memory tricks using such a kind of technique can be used in our everyday lives as well. The subject of mathematics or maths, as is it commonly referred, provides endless possibilities to devise newer tricks. The following trick would help in easing out the calculations to some extent. It is not easy to calculate the product of 157 and 14, i.e., 157×14 in quick time, unless one has a calculator. The procedure can be made easy by dividing this arithmetic problem in two parts, i.e., (160×14) - (3×14). The tricks and illusions presented above provide us with some entertaining stuff to enjoy. They also help in understanding the basics of functioning of our mind and brain.