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Your objective is to place some diagonal mirrors into the grid.

If a ray of light is shone in to the grid from each of the letters, and allowed to bounce off the internal diagonal mirrors, each will exit the grid at the twin of the letter that it entered the grid. For example, a ray entering at either letter D will bounce off some mirrors and exit the grid at the other letter D.

Each row and each column will contain exactly two of the diagonal mirrors.

Puzzle Copyright © Elliott Line
This puzzle appeared in Mensa's EnigmaSig (196.26) and is used with permission.

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Start in the bottom left corner and move either up or right, one square at a time, using the numbers and the mathematical signs along the way. What is the largest total you can make?

+	2	–	4	+	2
2	+	2	–	2	+
–	1	+	3	–	3
2	–	3	+	1	–
+	1	–	3	+	2
3	+	3	–	2	+

Note: this puzzle is not interactive, and the numbers cannot be clicked.

Puzzle Copyright © Kevin Stone

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If 5 cats can catch 5 rats in 5 minutes …

… how many cats do you need to catch 100 rats in 100 minutes?

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Can you find the country hidden in the following sentence:

I really fear lions and tigers, but the animal I fear most though is the mouse.

Puzzle Copyright © Kevin Stone

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