Matchstick Checkerboard

MatchstickCheckerboard

 

Matchstick Checkerboard…

There are five squares formed with 20 matchsticks, as shown in the illustration. Move three matchstick to get nine squares. The matchsticks’ overlapping or breaking and “lose ends” are not allowed.

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Source: http://www.grabarchukpuzzles.com/websites.htm

 

 

 

 

 

 

 

 

 

Answer:  Nine squares are formed: seven 1×1 squares and two 2×2 squares

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