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26 Logic Puzzles That Will Keep You Guessing

It might be tricky to solve these logic puzzles on the first try, but power up your brain and read it through a few times and you're sure to get them.

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Learn your logic

Test your smarts with these tricky logic puzzles. See how many you can solve and if you can get a perfect score on all 26. To exercise your brain even more, try solving these difficult brain teasers.

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Friends?

What do the following words have in common?

  • FUSION
  • VENT
  • CAVE
  • CORD
  • DENSE
  • FIRM
  • FRONT
  • FUSE

Answer: Each can have the prefix CON- to form a new word. If these logic puzzles are too easy for you, try these brainteasing puzzles for National Puzzle Day.

one letter less or more illustrationMind Stretchers

One letter less or more

The word on the right side contains the letters of the word on the left side plus or minus the letter in the middle. One letter is already in the right place.

Answer: Notepad.

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Uncanny turn

Rearrange the letters of the phrase below to form a cognate anagram, one which is related or connected in meaning to the original phrase. The answer can be one or more words.

NO NIGHT SKY REMINDER

Answer: Red sky in the morning. See if you can solve the world’s first crossword puzzle.

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Heterographs

Homophones are words that share the same pronunciation, no matter how they are spelled. If they are spelled differently then they are called heterographs. Find heterographs meaning: FIBBER and ANCIENT GREEK INSTRUMENT

Answer: Liar/lyre.

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Olympic sports

Each of the three lines of letters below spells the names of Olympic sports, but the letters have been mixed up. Four letters from the first word are now in the third line, four letters from the third word are in the second line and four letters from the second word are in the first line. The remaining letters are in their original places. What are the words?

G O L M E S B C L L

E Y T N A H T I N S

P V N L A T Y L O A

Answer: Feelings. Here’s what really happens to your brain as you do these logic puzzles.

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Delete one

Delete one letter from MANLY AS IF FATE and let your imagination run wild.

Answer: Delete E and find A Fantasy Film.

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Double talk

Homophones are words that share the same pronunciation, no matter how they are spelled. If they are spelled differently then they are called heterographs. Find heterographs meaning: CROSS and INSULTING

Answer: Rood/Rude. These tricky crossword puzzle clues will leave you stumped.

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Trianagram

Three-word groups of anagrams are called triplets or trianagrams. Complete the group.

Answer: Bleariest, Liberates.

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Sandwich

What five-letter word belongs between the word on the left and the word on the right, so that the first and second word, and the second and third word, each form a common compound word or phrase?

Answer: Train. If you’re acing these logic puzzles, try this math puzzle that might just prove you’re a genius.

doodle puzzle illustrationMind Stretchers

Doodle puzzle

A doodle puzzle is a combination of images, letters, and/or numbers that represent a word or a concept. If you cannot solve a doodle puzzle, do not look at the answer right away. Think hard—and outside the box.

Answer: RAILinG, railing.

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Cognate anagram

Rearrange the letters of the phrase below to form a cognate anagram, one which is related or connected in meaning to the original phrase. The answer can be one or more words.

I CIRCLE “HOT” PEOPLE

Answer: Police helicopter. If logic puzzles aren’t your thing and you’re better with words, try these word puzzles that will leave you stumped.

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Types of music

Each of the three lines of letters below spells the names of types of music, but the letters have been mixed up. Four letters from the first word are now in the third line, four letters from the third word are in the second line and four letters from the second word are in the first line. The remaining letters are in their original places. What are the words?

B O R K E R I H O Y

R R C C A B T L L L

O A B H E S S R A P

Answer: Barbershop, rockabilly, orchestral. 

word wall illustrationMind Stretchers

Word wall

Beginning at the left side of the wall, make a word by adding one group of letters from each column as you move left to right. When you have found the first word, go back to the second column and start the next word, gathering one group of letters from each column, and so on until all the letters are used to make six words.

Answer: Disenfranchisement, Tempestuousness, Perfidiously, Sonneteer, Elites, Per. Here are the most challenging jigsaw puzzles you can buy.

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Dance styles

Each of the three lines of letters below spells the names of dance styles, but the letters have been mixed up. Four letters from the first word are now in the third line, four letters from the third word are in the second line and four letters from the second word are in the first line. The remaining letters are in their original places. What are the words?

C B A R A E K T N N

T R E R E D A L C E

H A L A N T S L O A

Answer: Charleston, breakdance, tarantella. 

clockwise illustrationMind Stretchers

Clockwise

The answers to the clues from 1 to 12 are all seven-letter words which end with the letter D. When you have solved the puzzle correctly, working clockwise from 1, the twelve letters in the outer circle will spell a word which can be applied to formulaic matters.

1. Duck 2. A defendant

3. Gland 4. From an egg

5. At large 6. Damaged

7. Agitated 8. Browned by heat

9. Breathed in 10. Pattern

11. Insured 12. Fastened

Answer: 1) Mallard 2) Accused 3) Thyroid 4) Hatched 5) Escaped 6) Mangled 7) Alarmed 8) Toasted 9) Inhaled 10) Checked 11) Assured 12) Latched (Mathematical). If you don’t want to stare at a screen, here are some printable word search puzzles.

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Which one goes?

Delete one letter from JAIL ARCH POCKET and fall into a trap.

Answer: Delete H and find Practical Joke.

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What’s similar?

What do the following words have in common?

CROWD COAT BOARD BURDEN BITE DOSE A

Answer: Each can have the prefix PAN- to form a new word. If you’re having trouble solving these logic puzzles, here are some brain games to boost your brainpower.

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Rearrangement

Rearrange the letters of the phrase below to form a cognate anagram, one which is related or connected in meaning to the original phrase. The answer can be one or more words.

IN GRAND SPACE

Answer: Parascending.

winter house illustrationMind Stretchers

Winter house

What five-letter word belongs between the word on the left and the word on the right, so that the first and second word, and the second and third word, each form a common compound word or phrase?

Answer: Green. These printable crossword puzzles are sure to test your smarts.

what's the word illustrationMind Stretchers

What’s the word?

Beginning at the left side of the wall, make a word by adding one group of letters from each column as you move left to right. When you have found the first word, go back to the second column and start the next word, gathering one group of letters from each column, and so on until all the letters are used to make six words.

Answer: Autobriographically, Ophthalmologist, Idealization, Immigrant, Plaits, Pry.

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Take one out

Delete one letter from INCARNATE LOVE AD and find something nice in the mail.

Answer: Delete O and find Valentine Card. Try to find the missing number in this tricky puzzle.

letter blocks illustrationMind Stretchers

Letter blocks

Move the letterblocks around so that words are formed on top and below that you can associate with thrillers. In some blocks, the letter from the top row has been switched with the letter from the bottom row.

Answer: Monster. Vampire.

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Find the meaning

Homophones are words that share the same pronunciation, no matter how they are spelled. If they are spelled differently then they are called heterographs. Find heterographs meaning: FUEL and DARK COSMETIC POWDER

Answer: Coal/Kohl.

doodle logic illustrationMind Stretchers

Doodle logic

A doodle puzzle is a combination of images, letters, and/or numbers that represent a word or a concept. If you cannot solve a doodle puzzle, do not look at the answer right away. Think hard—and outside the box

Answer: GRandFATher, Grandfather. Here are some math riddles only the smartest can get right.

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Weather connection

Each of the three lines of letters below spell words with a weather connection, but the letters have been mixed up. Four letters from the first word are now in the third line, four letters from the third word are in the second line and four letters from the second word are in the first line. The remaining letters are in their original places. What are the words?

H A T E D P R I O G

T A U N T E R E N M

W E W R H O R F A N

Answer: Waterproof, Thundering, Weatherman. Try to find the missing words in these puzzles, less than 60 percent of people can.

symbol sums illustrationMind Stretchers

Symbol sums

Can you work out these number sums using three of these four symbols? + — / X (No fractions or minus numbers are involved in the sum as you progress from left to right.)

Answer: 11 x 3 — 13 / 5 = 4. 

mind stretchers covers vol 1 and vol 2Mind Stretchers (2)

For more puzzles…

If you’re craving more puzzles that make your brain hurt, purchase your own copy of Mind Stretchers. With ten volumes, you’ll never run out of things to do. Now that you’ve solved all of these logic puzzles, try to find the secret word hidden in this puzzle.

 

Originally Published in Mind Stretchers Volume I

Morgan Cutolo
Morgan is the Assistant Digital Managing Editor at Reader’s Digest. She graduated from the University of New Hampshire in 2016 where she received her Bachelor of Arts in Journalism. When she’s not writing for rd.com or keeping the 650+ pieces of content our team produces every month organized, she likes watching HGTV, going on Target runs, and searching through Instagram to find new corgi accounts to follow.