


Outside The Hole  If you remove a disk from the center, what is the area of the remaining paper?
 August 25, 2014 

Christmas Tree  There are exactly three equilateral triangles  the object is to move three matches so as to get four equilateral triangles.
 August 25, 2014 

Find The Center  UWhich one of the two dots is the true center of the circle?
 August 25, 2014 

Saddle The Horses  Can you arrange the three cards so that each rider is in his correct riding position on top of each horse?
 August 25, 2014 

The Wine Glasses  The object is to move six of the ten matches in such a way as to get a house instead of the glasses.
 August 25, 2014 

Nob's M  Can you divide this shape into four identical pieces?
 August 25, 2014 

The Five Pennies  Can you arrange these five pennies so that every penny touches every other one?
 August 25, 2014 

In 'n' Out  A great Martin Gardner puzzle...is region B inside the curve or outside it?
 August 25, 2014 

Knight Spell  Spell the word KNIGHT letter by letter, jumping from spot to spot as a chess piece moves.
 August 25, 2014 

Tessellated Tiles  A crafty Henry Dudeney puzzle.
 August 25, 2014 

Exchange Puzzles  In each puzzle, which two tiles should be swapped to get the correct equation? 
August 25, 2014 

