Solutions

These solutions shown by the blue matches are not unique. There are usually two possible answers

 

1) Put the head on bottom

left dot.                           2) Put head on the centre dot.

 

 

 

 

 

 

 

 

3) Place your match to leave two spaces open, as shown by either of the blue matches.

4) Place a match to leave just two spaces open.

 

 

 

 

 

 

 

 

 

 

 

 

5) Playing a match as shown by the blue match will leave two possible places intact.

 

                   6) Play to leave two possible places.

 

 

 

 

 

 

 

 

 

 

 

Investigation