Focus with three checkers. Effective trick and its solution

EFFECTIVE FOCUSES AND THEIR CLUES
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Focus with three checkers. Focus Secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Focus Description:

While the magician is standing, facing away from the board, the spectator takes three checkers and places them on the board either diagonally, marked in the figure with three letters A, or on the opposite diagonal, marked with three letters B, and begins to move them, saying to himself the letters of his name or Surnames (or both):

Focus with three checkers

At the same time, there should be only one move for each letter, which can be made by any checker in any direction per cell (checkers move only along white fields). After the whole surname has been pronounced, the viewer can repeat the whole procedure several more times, again choosing checkers at random.

After that, the artist turns to the audience and, glancing briefly at the board, announces from what angle the viewer began to move the checkers: from the upper left or lower right.

Focus secret:

The name and surname, which must be pronounced letter by letter to yourself, must necessarily consist of an even number of letters. If both the name and surname of the viewer contain such a number of letters, you can take one or the other. If an even number of letters has only one of these words, then offer to pronounce exactly this word. If, finally, both words consist of an odd number of letters, then they must be pronounced one after the other (since the sum of two odd numbers is even).

Turning to the audience and looking at the board, pay attention to the vertical even rows, considering them numbered, as in the figure. If there are only an even number of checkers in these rows (that is, two or none), then at first the checkers were in the lower right corner, otherwise - in the upper left.

The total number of checkers in even vertical rows changes (in one direction or another) by exactly I at each move. With an even number of moves, the parity of this number will not change and will remain the same as in the initial placement of the checkers. For AAA placement this number is odd, but for BBB placement it is even.

Author: M.Gardner

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