One day SETI (Search for extraterrestrial intelligence) got the message from the E.T. / alien as shown next.
Now help SETI to decode this message.
[This puzzle was originally published in my book “Out of Box Computational Thinking Puzzles”. Find more interesting puzzles (including from that book) on this link. Also, don’t forget to check my puzzle books “Computational Puzzles To Flex Your Brain: 50 original puzzles to sharpen computing mind and mathematical skills” and “Brain Teasers with Coding For Data Scientist 2: 9 New Computational Puzzles” and “Puzzles with Coding: Puzzles for Everyone” at Amazon. For purchasing my books or related queries, feel free to contact me. Even in coding puzzle books, you will find interesting puzzles those are suitable for coders as well as non-coders. Coding solutions are also provided with Python code. So, grab a copy of those books and jump into the world of fascinating and exciting puzzles.]
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Solution:
The message of E.T. is “Hello”. If you mask the message image with an actual 9X9 chess board, an output image will resemble ‘Hello’ word.
