This is an interesting close-up effect.It is self-working and is based on mathematical principles.

In effect, you display 5 different colour dice. On each of the 6 faces of a die is printed a different 3 digit number. Therefore, a total of 30 different 3 digit numbers are available on all the faces of the 5 dice. A spectator can check to verify this.

A spectator rolls the 5 dice and the numbers shown on the upper faces of the 5 dice are totaled up. The spectator may need to use the calculator function in her mobile phone for this addition.

Meanwhile, the performer is writing a number down on a piece of paper. When the addition is completed, the total is found to coincide with the performer’s written figure. The procedure can be repeated and a different total is obtained each time. Each time, the performer is able to reach the total of the 5 dice much faster than the spectator.

You are supplied with the 5 colour dice and a clearly written set of instructions. The only downside is the small symbols printed along with the 3 digit number on each face of the dice. Other manufacturers supply the dice with just the numbers printed on them, no other symbols, and this makes for much easier reading.

If you own or can get a copy of the classic book entitled “My Best”, compiled and edited by J.G.Thompson, Jr. way back in 1945, there is a section on this effect on pages 242 to 246. It described the original effect by Royal Heath entitled “Dy-Cyphering Trick”. This is followed by Verne Chesbro’s observation of other mathematical properties exhibited by the numbers on the 5 dice. Verne then devised an excellent presentation where the performer does not even need to see any of the rolled dice and yet he can divine the total. Finally, the 5 dice are rolled again and arranged in a straight row. The performer can divine the 15 digit number in the correct sequence as that shown on the top of the dice!

This brings the effect many levels higher and is suitable to be performed on stage.

Even if you do not have this manuscript, this is an intriguing close-up effect with colourful props. The quality of the 5 dice supplied is good, and at the price, this effect is a real steal! (3.5/5 stars rating).