NEW!

Half-Moons

Jul 12, 2016, 7:19 PM

Nine moons. Some ratio has to be reached by rotating some number of the moons. What is the number?

Registration:

|

Event:

NEW!

The Phone Number Math

Jul 01, 2016, 11:56 PM

Alison’s 10-digit phone number consists of 10 different digits. No repeats. What is the first digit in Alison’s phone number if…

Registration:

|

Event:

NEW!

Hexagons Plus 2

Jun 10, 2016, 11:56 PM

In a composition of four cubes the outlines of 3 regular hexagons can be spotted. It’s enough to move and/or rotate just…

Registration:

|

Event:

NEW!

Candies

May 27, 2016, 9:18 PM

It was a warm July day. Around 70F in the air. Stephen had an appointment with his dentist today who was 16 miles away. Arriving a bit earlier than…

Registration:

|

Event:

NEW!

Fruit Magic

May 20, 2016, 9:57 PM

A fruit is missing in this healthy produce arrangement. Name the one which should fill out the gap.

NEW!

Double Exposure

May 06, 2016, 11:54 PM

Nine digits are presented as words – a digit per line. Two digits can be spotted twice in this arrangement – each one when an imaginary straight line is drawn through the centers of respective tiles.

Registration:

|

Event:

NEW!

Shopping Spree

Apr 29, 2016, 11:58 PM

Charlotte spent her morning in downtown. After a delicious cup of hot chocolate at location #102, she visited a perfume salon at location #56 across the street. She then stepped into…

Registration:

|

Event:

NEW!

Triangle to Square

Apr 15, 2016, 3:53 PM

Suppose you have a shape of an equilateral triangle with straight sides. Using only a pencil and the triangle as a ruler it is possible to draw a…  

Registration:

|

Event:

NEW!

Straight to Finish

Mar 31, 2016, 11:50 PM

Three cars were racing on a track. They racing pattern was very interesting. Based on the pattern it is possible to…

Registration:

|

Event:

NEW!

The KC Office Puzzle

Mar 18, 2016, 11:23 PM

A floor planner wants to minimize the total distances for the company’s employees to the floor’s Kitchen. What is the reachable limit?

Registration:

|

Event:

NEW!

SketchFrame

Mar 03, 2016, 11:57 PM

Can you sketch a shape which should go instead of the question mark in order to complete the sequence?

Registration:

|

Event:

NEW!

Close Numbers

Feb 18, 2016, 8:20 PM

A certain number should be placed in one of the empty cells of the grid in order to complete the pattern. In which row should it go?

Registration:

|

Event:

NEW!

Changing the Total

Feb 11, 2016, 11:14 AM

Eleven matchsticks are arranged into two digits: 6 and 3, resulting in three numbers: 6, 3, and 63. Their total is 6 + 3 + 63 = 72. It is possible to move…  

Registration:

|

Event:

NEW!

Parent Committee

Feb 04, 2016, 12:59 AM

Sitting in a circle, eight parents were discussing their children’s class issues. Parents were of 4 different professions…

Registration:

|

Event:

NEW!

The NDQF Bet

Jan 27, 2016, 1:24 PM

Which coin should be placed on the fourth banknote in order to complete the initial pattern?

Registration:

|

Event: