## ERGRO

Add the same sequence of three letters both before and after **“ERGRO”** in order to form an existing English word.

**SOLUTION**

Add the letters U-N-D to get **UND**ERGRO**UND**.

We do not know where this puzzle originated from. If you have any information, please let us know via **email**.

We do not know where this puzzle originated from. If you have any information, please let us know via **email**.

Add the same sequence of three letters both before and after **“ERGRO”** in order to form an existing English word.

Add the letters U-N-D to get **UND**ERGRO**UND**.

Can you figure out what story the following sequence of statements is telling?

- 11 is a racehorse
- 12 is 12
- 1111 race
- 12112

**11** is a racehorse. **12** is one (**1**) too (**2**). **11** won (**1**) one (**1**) race. **12** won (**1**) one (**1**) too (**2**).

White to premove a mate in 6.

The sequence of moves is: 1. Qc6+ … 2. Kc5 … 3. Kb5 … 4. Qd7 … 5. Kb6 … 6. Qb7#

Toggle one pixel to make this equality correct.

(71+1)×(71-1) = 10×9×…×2×1 = 10!

FEATURED

Divide the circle below in two pieces. Then, put the pieces together to get a circle with a dragon, such that the dragon’s eye is at the center of the new circle.

The solution is shown below.

You are sitting on a plane. There is a horse in front of you and a car behind you. Where are you?

You are on a merry-go-round in an amusement park.

Move one red ball to turn the sequence 1-2-3-4 into 4-3-2-1.

Take the second-to-last ball and place it between the first two balls on the left.

Why despite killing dozens of people Charley and Wilma were not punished?

Charley and Wilma were intense hurricanes which formed in August 2004 and October 2005 respectively.

Cut a circular pizza into 12 congruent slices, such that exactly half of them contain crust.

*Remark: We say that a slice contains crust if it shares an arc with the boundary of the pizza (with non-zero measure).*

First, cut the pizza into 6 congruent circular triangles, and then split each of them in half, as shown on the image below.

What wears a crown but is no Prince,

Is good at standing but cannot sit,

Digs for years but leaves no pit,

And wears its jewels inside of it?

The answer is TREE.

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