BRAIN TEASERS
The Most Difficult Tasks (page 422)

The Most Difficult Tasks (page 422)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 4211 to 4220.
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Chess Knight Move

Find the title of novel, using the move of a chess knight. First letter is A. Length of words in solution: 10.
Correct answers: 30
The first user who solved this task is Nílton Corrêa De Sousa.
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#brainteasers #wordpuzzles #chessknightmove
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Chess Knight Move

Find the title of novel, using the move of a chess knight. First letter is T. Length of words in solution: 3,3,2,4,3.
Correct answers: 30
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #wordpuzzles #chessknightmove
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Chess Knight Move

Find the title of novel, using the move of a chess knight. First letter is H. Length of words in solution: 12.
Correct answers: 30
The first user who solved this task is Nílton Corrêa De Sousa.
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#brainteasers #wordpuzzles #chessknightmove

A beautiful young girl is abou...

A beautiful young girl is about to undergo a minor operation. She's laid on a hospital trolley bed with nothing on, except a sheet over her. The nurse pushes the trolley down the corridor towards the operating theater, where she leaves the girl on the trolley outside, while she goes in to check whether everything is ready.
A young man wearing a white coat approaches, lifts the sheet up and starts examining her naked body. He puts the sheet back and then walks away and talks to another man in a white coat.
The second man comes over, lifts the sheet and does the same examinations.
When a third man does the same thing, but more closely, she grows impatient and says: "All these examinations are fine and appreciated, but when are you going to start the operation?"
The man in the white coat shrugged his shoulders: "I have no idea. We're just painting the corridor."
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Find the right 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: 30
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #mastermind
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Remove 6 letters from this seq...

Remove 6 letters from this sequence (BEHWAVMICOXKEUR) to reveal a familiar English word.
Correct answers: 30
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #wordpuzzles
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Find number abc

If 9a8ab - ccabb = 29310 find number abc. Multiple solutions may exist.
Correct answers: 30
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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What 7 letter word becomes l...

What 7 letter word becomes longer when the third letter is removed?
Correct answers: 30
The first user who solved this task is Alfa Omega.
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#brainteasers #wordpuzzles #riddles
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Remove 6 letters from this seq...

Remove 6 letters from this sequence (SUITPPORTELRIEFS) to reveal a familiar English word.
Correct answers: 30
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #wordpuzzles
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Find number abc

If c600b - aca02 = b670a find number abc. Multiple solutions may exist.
Correct answers: 30
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #math
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Find number abc

If 57cc2 + 62ca9 = bb964b find number abc. Multiple solutions may exist.
Correct answers: 30
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #math
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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.
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Prions

In 1997, American biology professor Stanley B. Prusiner won the Nobel Prize for medicine for discovering “prions,” described as “an entirely new genre of disease-causing agents.” The name means “proteinaceous infectious particle.” Prions cause brain diseases such as BSE (Bovine Spongiform Encephalopathy or “mad cow disease”); the human variant Creutzfeldt–Jakob disease; kuru among some peoples in New Guinea; and scrapie in sheep and goats. Prions are too small to be seen with normal microscopy. They are self-replicating, but contain no nucleic acid. Prions are highly resistant to destruction or denaturation by common chemical and physical agents such as disinfectants, formalin, heat, UV or ionizing radiation. Inceration of infected tissues requires a temperature never below 900ºF for four hours.«
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