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  Spatial Awareness

Pennies on a Grid
 
Q In the grid below, you'll find four Xs in a row and three Xs in a row. (One row of Xs is vertical and the other is horizontal.) Your challenge is to make 3 rows of 3 Xs by moving only one X. (Hint: Use pennies so that you can try out different strategies.)

         x     
    x  
  x x x
    x  
       


 
A Move thexinboldfacetype to the box marked eitheraorb.

 x   x   x   x 
 a    x  
  x x x
    x  
       b