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San Jose Puzzle

Mar 14, 2018, 7:03 PM | by Serhiy Grabarchuk Jr

16 US Cities are split into two groups of eight cities each. Group 1 is on the left and Group 2 is on the right.

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Rose of the Winds

Feb 08, 2018, 2:46 PM | by Serhiy Grabarchuk Jr

How many sets of four dots placed in the corners of a perfect square can be spot in this Rose of the Wind diagram?

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The Doors

Jan 24, 2018, 11:48 AM | by Serhiy Grabarchuk Jr

The floor plan of a house has 8 rooms and 12 doors as is shown. Doors A and B lead outside.

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Pocket Money

Jan 14, 2018, 1:30 AM | by Serhiy Grabarchuk Jr

This morning Sam’s dad decided to test his son’s math progress at school. He put six pieces of clothes in front of Sam, each with a different number of pockets…

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An Odd World?

Dec 06, 2017, 11:58 PM | by Serhiy Grabarchuk Jr

You found yourself exploring a place where the finish precedes the start, where a pride goes after a fall, where creation follows…

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Pizza Time

Nov 16, 2017, 1:34 AM | by Serhiy Grabarchuk Jr

Four friends ordered a large pizza cut into eight slices. The friends ate the entire pizza, each of them eating a different number of slices.

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Tic-Tac-Toe: O2X

Nov 08, 2017, 2:47 PM | by Serhiy Grabarchuk Jr

A middle of a tic-tac-toe game. It is known the game eventually ended with a win. Assuming that both players are equally skilled and do not miss any chances to…

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Half-Moons

Jul 12, 2016, 7:19 PM | by Serhiy Grabarchuk Jr

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

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The Phone Number Math

Jul 01, 2016, 11:56 PM | by Serhiy Grabarchuk Jr

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

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Hexagons Plus 2

Jun 10, 2016, 11:56 PM | by Serhiy Grabarchuk Jr

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

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