Before we get into the real details of the routine, let’s look at what the audience 
sees and go over a brief description of how the effect is accomplished. Matrix begins 
when four coins are placed on the table in a square array (or matrix). Let’s 
designate the positions of the coins as Upper Left, Upper right and so on. A card 
is placed on top of each coin. The performer commands one coin to move, and then 
two cards are lifted to show one coin has disappeared from under one card to find its 
way under the card in the upper left hand corner. This is repeated with the other two 
coins until all the coins have gathered under the upper left hand card. 
The main move occurs while the right hand, holding four cards, thumbs a card onto 
each coin. As the second card is placed on the table, the fingers of the right hand 
secretly pick up the coin there. Then as the third coin is covered, the concealed coin is 
allowed to fall under the card. The fourth card is placed on the coin at the lower left 
position. Thus, a coin has been moved from the lower right position to the upper left 
position while the coins were covered. This one coin is a oneahead device to achieve 
the following three transpositions. 

 