BRAIN TEASERS

enter your answer and press button OK

What a winning combination?

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.

Correct answers: 46

The first user who solved this task is Djordje Timotijevic.

#brainteasers #mastermind

Register with your Google Account and start collecting points.

Check your ranking on list.

Cactus Detector

I'm no cactus expert...
But I know a prick when I see one.

Jokes of the day - Daily updated jokes. New jokes every day.

Follow Brain Teasers on social networks

Brain Teasers

puzzles, riddles, mathematical problems, mastermind, cinemania...

Harold DeForest Arnold

Died 10 Jul 1933 at age 49 (born 3 Sep 1883).American physicist whose research led to the development of long-distance telephony and radio communication. He worked at Western Electric on thermionic tubes, which amplified radio and telephone signals, leading to transcontinental telephony (July 1914). Even before the transcontinental line was completed, Arnold was directing work on the development of new higher power tubes to extend telephone service by radio to other continents. The first transcontinental demonstration of radio telephone (29 Sep 1915) was transmitted from New York City to Arlington, Virginia, then to San Francisco and Honolulu. Arnold later became the first director of research at Bell Telephone Labs (1925 to his death in 1933).

This site uses cookies to store information on your computer. Some are essential to help the site properly. Others give us insight into how the site is used and help us to optimize the user experience. See our privacy policy.