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jezek

Liked Puzzles

15 likes 4.0
(Moderate)

A cook must put a souffle exactly 9 minutes at the oven, but he only have a 7 minutes h...

Added 11 months ago by luis currently with 40 comments

8 likes 3.8
(Fairly Easy)

To help solve an acute national over-population problem, a government issues a radical ...

Added about 1 year ago by kash currently with 35 comments

12 likes 5.5
(Moderate)

What is the smallest whole number that can be divided by any number from 1 to 20 (inclu...

Added 11 months ago by Dusty currently with 23 comments

10 likes 5.6
(Moderate)

On Monday, you flip a coin all day. You start flipping it until you see the pattern He...

Added 11 months ago by kash currently with 28 comments

9 likes 5.1
(Moderate)

You have 8 lead marbles, one of which is heavier than the rest. What is the minimum amo...

Added about 1 year ago by dani3l currently with 31 comments

6 likes 5.0
(Moderate)

Two trains, with traveling speed 50 km/h (mph), are going against each other, on the sa...

Added 11 months ago by jezek currently with 36 comments

6 likes 4.0
(Moderate)

100 prisoners are standing in a line each 1 seeing the back of the ones in front of him...

Added about 1 year ago by jakab922 currently with 41 comments

16 likes 5.9
(Moderate)

Suppose a standard 8x8 chessboard has two diagonally opposite corners removed, leaving ...

Added about 1 year ago by copter currently with 22 comments

19 likes 4.8
(Moderate)

A downstairs panel contains three on-off switches. One of them controls the lamp in yo...

Added about 1 year ago by kash currently with 31 comments

11 likes 4.4
(Moderate)

This problem is more targeted towards people with Computer Science or similar backgroun...

Added about 1 year ago by city_slick currently with 27 comments

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