FOURTH STEP – Change 8 cards

Keeping ALL the cards face down, you only need to change EIGHT cards to turn the 4×4 squares into Magic Squares

This can be done in two different ways:

FOURTH STEP – Change 8 cards

FIRST WAY

– Change eight cards by reversing the two diagonal lines

Reversing first diagonal

Reversing the top left to bottom right diagonal

Reversing second diagonal

Reversing the top right to bottom left diagonal

SECOND WAY

Change the eight cards that are NOT part of the two diagonal lines:

  • Change 2 cards that are in the middle of the first line to 2 cards that are in the middle of the fourth line.
  • Change 2 cards which are in the middle of the first column to 2 cards which are in the middle of the fourth column.
Reversing the centre of top and bottom lines

Cross-changing 4 cards that are in the middle of two lines

– Change the second card on the first line (top) to the third card on the fourth line (bottom).

– Change the third card on the first line (top) to the second card on the fourth line (bottom).

Reversing the centre of first and fourth column

Cross-changing of 4 cards that are in the middle of two columns

– Change the second card in the first column (on the left) to the third card in the fourth column (on the right)

– Change the third card in the first column (on the left) to the second card in the fourth column (on the right)

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