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  1. long division
  2. Einstein's Riddle
  3. Difficult IQ test
  4. Possible or Impossible?
  5. How Many Girls for Every Boy?
  6. abababcb and perfect square puzzle
  7. Non duplicate digits and arrangement puzzle
  8. 8-digit number and divisibility puzzle
  9. River crossing brain teasers
  10. Count the F's
  11. Tricky math problem
  12. Number Sequence
  13. Decypher me
  14. Find the Error: Differentiation!
  15. What is for sale?
  16. Why is this proof wrong
  17. Cycles in a number-theoretic graph...
  18. What's Next?
  19. My first murder mystery
  20. nid help
  21. Logic problem
  22. Impossible Quiz
  23. Board Game Sequence
  24. Another Number Sequence
  25. Hard Puzzle Indeed
  26. Colored hats, liars, and truth-tellers
  27. Difficult Webhunt
  28. Complex Engineering Puzzle!!!
  29. Sum the three primes, get number
  30. Unbreakable encyrption
  31. What has yellow skin and writes?
  32. Pre and Ever Puzzle
  33. tell and deal puzzle
  34. Very Strange House
  35. Prisoner Hats
  36. Monday Morning Test
  37. You're in a room with 2 iron bars
  38. Seven digit base eight positive integer puzzle
  39. judge and criminal
  40. this/ close = 5/12
  41. thine/ evenly = 2/15
  42. Simple math question.
  43. A Prince and Five Puzzle
  44. Getting the maximum and the minimum with now
  45. Looking for story riddles/brainteasers
  46. A dopey resistance question.
  47. Decimal integers with nonzero digits and sum of powers puzzle
  48. Dwelling upon the triangular numbers
  49. Riddle me this:
  50. Prove ∑ … = (2^n-1)n!
  51. Shortest time in which P catches Q
  52. 2 missing number riddles
  53. Ten prime numbers describing an arithmetic sequence
  54. An annoying voltage question
  55. riddle
  56. The 9 dot puzzle.
  57. How does that work then
  58. Nice brain teaser
  59. How many triangles?
  60. Wrap around Tic-Tac-Toe
  61. Riddle-d'Do
  62. brain teaser
  63. Divide by one digit numbers by two digit numbers, and add to get 1
  64. Divide each one digit number by product, and add to get 1
  65. Getting perfect squares with four cryptarithmetic numerals
  66. One-ninths of seven gets 7/9.
  67. Telling the Will
  68. Multiplying two by two gets a square
  69. Semiconductor or conductor
  70. Octahedron problem
  71. (abcd)*(efghi) = acgefhibd
  72. Getting the multiplier, multiplicand and the product with U’s
  73. Multiplying six by two gets twelve
  74. Walking home from station
  75. 9-level Tower of Hanoi variant
  76. Three brothers - two vehicles
  77. Brain teaser Christmas gift
  78. Another Sequence
  79. Can you sum the parts within ten seconds?
  80. Answer this if you know your physics?
  81. No-one knows the answer to the tenth question ('cept me)
  82. Cut a cake
  83. Riddle of the links
  84. Edges in 11D Hypercube
  85. New IQ test
  86. Opening and closing doors
  87. subtract from 50
  88. One more number sequence
  89. Next number in sequence-game
  90. The first positive integer that cannot be specified in less than a billion words
  91. Four IQ test problems
  92. Summed exponents for a 8- digit positive decimal integer
  93. Decimal and nondecimal almost perfect squares of the form aaabbb
  94. Some Summed Digits In A 9-Digit Positive Integer
  95. Playing Checkers 4 your life?
  96. take fives And Sixes, Get N
  97. Forum Game - Where's That Landmark?
  98. Online professional IQ test?
  99. The Lamplighter's Manor
  100. I can name that physicist in 5 notes.
  101. What cometh next in the sequence?
  102. Crack this code if you can* Challenging
  103. Sum the squares cryptarithmetically, get square
  104. (4-digit number)*(6-digit number) equals a factorial
  105. Pirates Dividing Loot Question- NEW
  106. Numbers in Triangle Rows of 3 are equal rows of 4 are equal
  107. Divide by one thousand and equate the ratios
  108. Square BAE, Get ABCADE
  109. Acceleration
  110. Cryptarithm And Integral Problem
  111. King's Dungeon
  112. Perimeter and radius
  113. Getting progressive with arithmetic, geometric and harmonic
  114. Opinions on Thinking Physics
  115. a logical question..
  116. Bertrand's Box Paradox and Monty Hall Problem
  117. ?? 45 minutes exactly ??
  118. Which coin is fake?
  119. a logical question..
  120. Just for today.
  121. Paint Can Problem
  122. how to make a glass out of a bottle
  123. Ship and rope problem
  124. Identify the balls
  125. Country List
  126. Find population
  127. Way to Heaven
  128. Manage rectangular cloth for square table
  129. Four Clocks Problem
  130. a logical question i tried to solve using VEN
  131. Brain Teaser!
  132. a logical question..
  133. i use another nick some_one=transgalactic
  134. A question of latitude.
  135. Zeta regularization riddle
  136. Long division with zero to nine substitution
  137. a logical question..
  138. 10 dwarves and a giant.
  139. a logical question..
  140. a biblical riddle..
  141. a logical question..
  142. a logical question..
  143. a logical question..
  144. 12 coins and a balance beam scale
  145. A flight around the world
  146. a question about strategy thinking this logical questions
  147. a logical question..
  148. a logical question..
  149. a logical question..
  150. a puzzle
  151. logical question..
  152. logical question..
  153. where can i find forum that solve these kind of questions..
  154. Balls puzzle.
  155. A three digit number and reversal puzzle
  156. circles and spheres
  157. Ascending Decimal Digit Puzzle
  158. light bulbs
  159. Ten Digits And Operator Puzzle
  160. Tossing a coin... 3 times ?
  161. Another political discussion
  162. Can You See The Patterns..?
  163. Grandpa and Grandma age?
  164. :( Help!
  165. Lockers
  166. IQ like pattern question
  167. The Chinese Remainder Theorem (the CRT)
  168. An Average Speed Paradox
  169. Next number: 61, 115, 771, 4129, 15649, ?...
  170. *Test Your Logical Skills*
  171. Probability Question
  172. Ducks and Chickens
  173. Simple Proof
  174. The Face Game
  175. (Not a text brainteaser) Speed Solving the Rubik's Cube
  176. Fun Brainteaser
  177. What is the next number in the sequence?
  178. In theory, this should be easy....
  179. 3rd grade ?
  180. names. ideas yea?
  181. Another ant riddle
  182. Boy Girl Paradox
  183. puzzle on shapes
  184. National Bureau of Standards, 3 GEE Cal test
  185. Grumpy and Friends
  186. Math Brain Teaser
  187. An ant on a cube
  188. Science Challenge: Prove these magnets won't move
  189. [SOLVED] Funny Money Problem
  190. Coin weightings with two irregular coins
  191. Interesting and challenging IQ questions
  192. Can you solve this sequence?
  193. Interesting hidden message
  194. Geometry puzzle: plane X cylinder = ellipse
  195. [Help!] Strange vague puzzle
  196. Riddle Quiz
  197. Diagonal Garden Path
  198. An extended and much much more challenging version of Einstein's puzzle
  199. A more extended and much much more challenging version of Einstein's puzzle
  200. Untangle
  201. Why is clockwise clockwise?
  202. Math/ Economic brain teaser - due to the credit crisis
  203. thinking out of the cat's box
  204. am i right
  205. thinking outside the clox
  206. Add the numbers from 1 to 100
  207. Riddle. This is really hard. Have fun!
  208. got another one
  209. Riddle Competition Help
  210. 12 balls
  211. what do these have in common
  212. Can you help me solve these sequences
  213. Help please - DOG THE
  214. The Most Creative Response...
  215. Ship
  216. Dogsmead?
  217. The light bulb.
  218. [SOLVED] analogue and digital question (really urgent!)
  219. Help me solve this!!!
  220. Figure this!
  221. Find The Missing Number
  222. Card Game: 24
  223. Simplest way to pay debts
  224. a Martin Gardner problem
  225. Can you solve
  226. Don't burn these ropes
  227. Burn ropes
  228. Mirrors...
  229. letter equations! ie- 7 D of the W = days week
  230. multiply
  231. Interesting...
  232. good math riddles
  233. Can you solve this?
  234. Visual Brain Teasers Thread
  235. Riddle
  236. cube partition
  237. iq 130+ simple but confusing brain teaser.
  238. More crazy, but logical, people ...
  239. Brain Teaser - Scratch!
  240. Microsoft Interview Brain Ache
  241. Heaven or Hell?
  242. Paradox?
  243. Quantum Cat
  244. 2x2, 5x5, and Gordians Knot
  245. Weight of a plane
  246. 8 balls, 2 weighings
  247. Thermonuclear device to destroy hurricanes
  248. Two Riddles
  249. Secuence and series
  250. Troll Bridge
  251. Topology riddle
  252. Tricky Track
  253. How many children
  254. .:Deserted island:.
  255. Dominoes on a Checkerboard
  256. A Circle And Adjacent Number Puzzle
  257. Batman, Robin and Catwoman
  258. Can a cube be cut in 27 smaller cubes in less than 6 cuts?
  259. Funny Brain Teaser
  260. Weighing Puzzle
  261. strange combinatorics
  262. how'd they figure that? (logic puzzle)
  263. Getting max points on a grid
  264. Weighing bags
  265. Complicated Brain Buster!
  266. 3 rooms 3 bulbs
  267. 15 minutes per minute
  268. Location, location, location.
  269. What row comes next?
  270. Good riddles
  271. Cryptanalysis
  272. Averagely difficult brain teaser
  273. In which scenario is this possible?
  274. Interesting Maths Puzzle
  275. i invented a card game based on the 'wheel'
  276. Mirror on the Wall...
  277. hidden code
  278. What Colour is your Hat?
  279. A Handshake Problem
  280. An Integer Temperature Puzzle
  281. Professor's game
  282. Age of kids
  283. what color hat do you have on ?
  284. weighing marbles
  285. next number in a sequence
  286. Piece of cake
  287. A tribute to demystifyer
  288. A Color problem.
  289. Ken ju andrstend dis?
  290. Where is the father?
  291. A semi-tough question I came accross
  292. Trigonometry "puzzle"
  293. Brackets
  294. pretty hard (yet simple) puzzle
  295. this is a hard code to crack
  296. A Dinner Puzzle
  297. A Chessboard Puzzle
  298. A monk problem
  299. Bad Coin
  300. Poison Bottles
  301. An Orange Consumption Problem
  302. Hidden Text, People!
  303. Lateral thinking puzzles.
  304. Terminate This If You Can!
  305. Riddle Time!
  306. Lateral Problems
  307. A Space And Time Puzzle
  308. Two Vowel Puzzles
  309. flipping the M
  310. A couple of puzzles
  311. Fill the word ,game.....
  312. Break the code
  313. Sequence
  314. Room on Stilts
  315. Tricky Questions!!!
  316. Top Spin!
  317. doctors...
  318. Brain Teasers Q&A Game
  319. Painting job
  320. Who got a brainteasers book for Christmas... ?
  321. The pole in a lake!!
  322. Fill it up!
  323. Pizza deal
  324. Grandpa's age
  325. Pyramid of Egypt
  326. 1st Day at school
  327. Old Man & Wrinkle
  328. True or false?
  329. Find it why!
  330. Who's that?
  331. Apputten mangoes in a box and you savithree ok?
  332. A question....!
  333. cum'on try thiZzzzzz.....!! :)
  334. Gun Problem
  335. Really good brain teaser site
  336. Albert Einstein's Riddle...
  337. Circle's slightly harder challenge
  338. Superdokey
  339. Circle's brain teaser challenge
  340. Slightly harder
  341. No Peeking
  342. Physics Quiz of the Year
  343. einstein quiz
  344. Really Tough/Fun Brain Teaser
  345. IQ Test Questions
  346. Some new cookies started appearing in The Bakery very recently.
  347. An Examination Puzzle
  348. A Division Puzzle
  349. Math Teaser!!
  350. anybody preparing for multiple question choice exam try this!
  351. Ubi-Ubi's Ruby
  352. Really hard Brain teaser I need help with.
  353. Another Boat Question. Need help though!
  354. Go figure - check this out
  355. Deductive Reasoning Q?
  356. BRAIN TEASER PROBLEM! Please help me!
  357. Prisoner's Choices
  358. absent minded clerk
  359. probability
  360. Still needing HELP..but should have posted this
  361. A ringing headache
  362. I'm new and need HELP
  363. Prove this!(fun proof)
  364. Need Fast Help
  365. I've made a few mistakes in my day
  366. Please don't email me anymore. I just can't take it
  367. Brains=$$$
  368. Decoding/Decrypting sheet music
  369. websites
  370. Prisoner's Dilemma
  371. a word riddle
  372. Needed: More brain teasers
  373. Some brain teasers~~~~Plz look and try....
  374. Shollenbarger's Clock
  375. Connect the dots
  376. fun finding i just found
  377. A real big toughie. Takes some time.
  378. New Da-Vinci-Code-movie puzzle, by Google
  379. Liars and Truth Tellers
  380. Divisibility
  381. Brain Teasers and Math Problems
  382. "Lost" (TV Show) Equations
  383. Machine VS Human
  384. 4 doors to hell riddle
  385. What #?
  386. The solid angle of coffee
  387. What is the 5 numbers?
  388. Permutation derivation?
  389. Dr. Watson and German secret Club
  390. A Puzzler
  391. Simple, but fun
  392. Something easy.
  393. Grammar Lesson #2
  394. I'd had grammar lessons by then
  395. Yet another sequence
  396. 5th puzzle post-the impossible sequence
  397. decrypt this
  398. 4th puzzle post
  399. 3rd puzzle post
  400. Weighing the balls
  401. Two more sequences
  402. "Hardest internet enigma"
  403. Next Number in the Sequence.
  404. divergence of the harmonic series
  405. tattoo teaser
  406. Word Challenge
  407. zio (india) problem i don't know how to solve such problems
  408. Flash Mind Reader
  409. Can you break it !! i bet u cant !
  410. The ants go marching....
  411. N 4's - Redux
  412. dividing space with 5 planes
  413. 12 coins, and one counterfeit.
  414. Chess Bain Teaser
  415. Probability Oddiments
  416. Brain Teaser with Answer Unknown
  417. The Blind Mathematician
  418. The sky is falling down on me
  419. Mod-x
  420. 12 coins
  421. encryption
  422. A little Contest... Show me something that is Absolutlly Useless
  423. Simple Formal Logic Riddle
  424. Cryptogram...
  425. Poker Chip Puzzle...
  426. really challenging puzzle
  427. Color for hidden text
  428. Ths wrd hs n vwls
  429. Anyone good at cryptology?
  430. deductive logic problem
  431. pattern possible?
  432. Einstein's Riddle
  433. Three 3's
  434. my 2nd puzzle post -sequence
  435. my 1st puzzle post
  436. I am the only one here
  437. I was feeling a bit clever
  438. Where's the change?
  439. axes
  440. Orbital Puzzler
  441. Pythagorean triangles
  442. Does God have tile floors?
  443. Four 4s
  444. Need some help with a murder mystery
  445. Confounding handshaking puzzle
  446. familiar numbers puzzle
  447. count the letters
  448. Su Doku
  449. where's the fish?
  450. Next Number?
  451. Never seen on the web
  452. Can't figure this one out
  453. Interesting puzzle involving prediction/preemption
  454. Two daughters in rivalry
  455. primes
  456. switches-lightbulbs
  457. Race between Bon Jovi and Kurt Kobain
  458. Help these poor little frogs!
  459. Mr Explorers treasure hunt
  460. Algorithm ponderer
  461. advantage of both.
  462. Another Sequence...
  463. help
  464. beads puzzle
  465. 5-suit Texas Hold 'Em: ace high beats one pair
  466. camera angles
  467. Barber's paradox
  468. MI String
  469. Metric System Story
  470. space ship collision
  471. The ole 12 snooker ball question (and my job!)
  472. Logic Lovers
  473. Cannibals
  474. In a certain country
  475. 12:34
  476. Bear
  477. Another river problem..
  478. how'd he know there was sh.it on his head?
  479. Mirror
  480. puzzle idea
  481. TRAIN Driver.
  482. Square root of 3?
  483. hay... magic.
  484. Pity Man need help....
  485. Corey the camel
  486. square roots
  487. basic problem
  488. Save 10 prisoners
  489. Does anyone know this question ??
  490. Two person with the same number of friends?
  491. 12 objects and only three experiments
  492. Movie Tickets
  493. Four Nines Puzzle
  494. A sequence of sorts...
  495. 1, 2, 3, 4, 5, 6, 7, 8
  496. Fibonacci sequence
  497. Elliptical Constant
  498. the power of 7
  499. Get them across the river...
  500. Grade 2 Puzzle
  501. Microsoft interview questions
  502. Geometry Puzzle
  503. Number Patterns!
  504. Statistical Geometry
  505. The hardest logical puzzle according to George Boolos
  506. sense
  507. Car game
  508. Sequence
  509. Simple puzzle
  510. faulty coins
  511. faulty balls
  512. substrings and superstrings
  513. Minesweeper puzzle
  514. The Lift Problem
  515. Sliding Blocks
  516. Mysterious
  517. Four fours
  518. Three bulbs.
  519. 6-inch bar
  520. Einstein, the farmer and the cows
  521. Minesweeper puzzle
  522. Procedure
  523. Poison bottles
  524. trademark
  525. Need solution to this puzzle
  526. factors
  527. Petals around the Rose
  528. yet another number pattern
  529. another number pattern
  530. Missing person illusion
  531. A Bridge Puzzle
  532. A Logic Puzzle
  533. Sharing Tuskers
  534. Bisect a plane figure.
  535. Tiling problem
  536. inspector Colombo
  537. Cheaper by the dozen
  538. big commute
  539. Sequence
  540. Trick question
  541. Navigation Problem
  542. Nine Dots
  543. 142[999]857
  544. Need good riddles!
  545. Why No Explosion?
  546. Somewhat Simple Pattern
  547. Universal Sequence
  548. Ticket writing protocol.
  549. Would you jump off too?
  550. triangle
  551. The GREAT thread of riddleness!!!
  552. Help really really really needed!
  553. Another riddle
  554. Riddle
  555. Help Please!!
  556. Puzzles at the MathCad website
  557. Squared Pattern
  558. Murder Mystery
  559. Yet Another Pattern?
  560. Next Number
  561. Square Pyramid puzzle
  562. Chess problem: White to mate in 2
  563. Easy logical number puzzle
  564. Another pattern
  565. A small problem
  566. boggle your mind
  567. Multiplying by 2
  568. Last Wish
  569. Picture puzzle
  570. Missing Dollar
  571. Numbers - Confused Yet?
  572. alone in the dark
  573. who am i?
  574. Adequately showered?
  575. This one may be easier than cannibal logic
  576. Cannibal Logic
  577. Fisher's riddle.
  578. Quick Little Word Teaser
  579. hard logic problem
  580. the easiest logic puzzle of all time
  581. A somewhat easier liar/truther puzzle
  582. hardest logic problem ever
  583. fake coins
  584. Unusually common dice
  585. sqrt
  586. Painting the plane
  587. Math professor and number of rooms
  588. Pattern
  589. Complete the Array Series
  590. Helpppppppppppppppp!
  591. The method
  592. who am I?
  593. teaching
  594. An important part of the boat
  595. hand shaking (again)
  596. Numeric Nonsense
  597. Stupid Seller???
  598. egg dancing (or something)
  599. An age-old problem
  600. old brain teaser....
  601. Math limerick
  602. Math limerick
  603. Dichotomy
  604. [SOLVED] The Bear and the Food
  605. Sum of diagonals
  606. HELP...I Can't Figure Out These Number Patterns
  607. infinity
  608. Knowledge Horizon Contest
  609. integration x^-1
  610. time
  611. What will be the resistance
  612. Fly in a car
  613. Quick and witty!
  614. Paparidox
  615. If you ever said any of these, think twice
  616. More this is not pron
  617. Nuber problem
  618. Night of the living straight edge!
  619. 3 light bulbs 3 switches
  620. Picutre Puzzles.
  621. Brainteasers....
  622. pattern
  623. Hardest puzzle on the internet
  624. Cursive letters
  625. You are cordially invited to match wits with some of the best minds in IBM Research.
  626. The dog jumped over the fence? Polysemys
  627. Binary Sequence
  628. Sequence
  629. Spiders
  630. Worlds
  631. Pattern
  632. Try to find out what this is :
  633. Getting out
  634. Flight distance
  635. Camera Mystery
  636. Pirates
  637. King and his knight
  638. Stairs.
  639. A Riddle
  640. Relativity Rabbit
  641. Land
  642. World's easiest quiz
  643. The Bear
  644. Difficult "IQ" test
  645. Pearls before swine
  646. find x
  647. Arithmethic
  648. Trains
  649. Need some Free Flash Math Puzzles
  650. Hong Shui
  651. tria
  652. rainy day
  653. round table
  654. Liquid
  655. Puzzle game
  656. shoes
  657. Mr. Fubini
  658. Mental arithmetic
  659. Frogleap
  660. What animal and elephants?
  661. Triangle paradox
  662. tower of hanoi
  663. find ef
  664. in term of
  665. Anyone know good math games?
  666. Who am I?
  667. a truel (part 1)
  668. Plz help me in this light problem
  669. Eot-Cat-Cit
  670. PLz help me in this Corner Reflector Problem
  671. hanging over the edge
  672. Twins
  673. Man Vs Bus
  674. find x
  675. Sequence
  676. Happy Math
  677. Not an exact brain teaser, but..
  678. Without using a calculator
  679. speeding car
  680. Chess puzzle
  681. the dark room
  682. Petals Around the Rose.
  683. What next?
  684. When rotten PF members were rotten PF kids
  685. The Solution To The Hardest Logic Puzzle Ever!
  686. Handshakes
  687. Where the hell is Gokul?
  688. Counting paths
  689. Speed Dating the PF Sisterhood
  690. Sexy underwear worn by PF Sisterhood.
  691. prove!!!
  692. Puzzler
  693. coin weighing problem (ibm)
  694. Extremely cool IQ test
  695. weird pattern on car
  696. Money Machines
  697. The Hardest Logic/puzzle Question Of All Time!
  698. Number Sequence
  699. More cat and mouse
  700. Cat and mouse
  701. Stepping paths II
  702. How is it possible ?
  703. Stepping paths
  704. Spheres
  705. Family Members
  706. Triangle with extra area???
  707. Slipping stick
  708. Lightbulbs!
  709. Infinite possibilities
  710. n-dimensional trianglehedron?
  711. Huygens & non-orbital re-entry speed
  712. what comes next?
  713. make 21
  714. El Cheapo Number Game
  715. Hmuan Mnid-Paomnnehel Pweor
  716. Arithmetical teaser
  717. almost infinity
  718. Trig.quiz
  719. Math/drinking teaser
  720. logical thought
  721. Which travels fastest?
  722. What is the mystery item?
  723. Einstein's riddle
  724. Magic camera
  725. Come play If u Dare !!!
  726. reducing 1 million to 7
  727. Come play IF you Dare!!!
  728. what is it?
  729. can you explain this?
  730. hot coffee!!
  731. let ur mind work
  732. sum of series???
  733. Prove this!
  734. happy numbers
  735. Can you solve this riddle?
  736. Practice your LATEX skills!!!!!
  737. riddle
  738. A cow dance
  739. Hair of the Dog
  740. The Dark Room
  741. Inertia
  742. How does it turn?
  743. Simple Math...
  744. Magic square
  745. I want to ride my bicycle
  746. Help!!!
  747. 7-11
  748. Piss Bottle
  749. lockers
  750. how old are my 3 children?
  751. Win A Dollar!!!
  752. Ten Sheep
  753. It's good for you
  754. Equator and Polar Clocks
  755. Physics Teasers : Part 1
  756. 101 from 3, 4, 8 and 9
  757. How high can you count on fingers and toes?
  758. Take me to your leader
  759. Code
  760. Smargest number
  761. 2=1
  762. Why do race cars use wide tires?
  763. tunnel through the centre
  764. Something a little different
  765. My corny brain teaser 2
  766. As I was going to St. Ives
  767. Scientists don't have the answer...
  768. Fairly easy brain teaser
  769. pills
  770. Floating
  771. Missing digit
  772. German Logic
  773. Need help with this puzzle...
  774. A 3-D collision
  775. This is Not Pron
  776. Pocket Calculator
  777. Digital Pedometer for energy expended in exercise
  778. how bright?
  779. time dilation
  780. Flying weight change
  781. Trebuchet anyone?
  782. This Statement Is False
  783. the difference between a chicken
  784. if 3 cats eat 3 mice in 3 minutes; how many cats for 100 mice in 100 minutes?
  785. Yes, all the information needed is there
  786. Bridge over troubled waters
  787. Brain teaser.
  788. Infinite array of resistors
  789. Mile hill
  790. permutation groups
  791. 64 Squares
  792. Geometry problem
  793. "Cuckoss's Egg" sequence, next number?
  794. Number Theory
  795. The illiterate art critic
  796. A problem of lint
  797. Math Problem
  798. Logical Question
  799. can your brain handle this 2?
  800. Funny Riddle
  801. Cut up the star
  802. -1 = 1
  803. Hunting ducks. Not too hard.
  804. Easy teaser. Well, its not really teasing then is it???
  805. How Old Are the Three Sons?
  806. Fun little riddle
  807. Neverneverland and the three old men
  808. Motion of Particle in a Magnetic Field
  809. easy problem
  810. shortest path
  811. class
  812. biggest number
  813. who's the spy?
  814. camel and fig
  815. Treasure Hunt Solutions
  816. Age of the ship?
  817. The PF Treasure Hunt
  818. Good riddle, How do you get off the island?
  819. Five and One
  820. where is the 2 bucks?
  821. Brain Teasers Help
  822. wanna brain teasers?
  823. find P
  824. What is the time?
  825. box thing
  826. Matching game
  827. large number...
  828. What is this ?
  829. No Peeking!
  830. Creative (lateral) thinking to solve a complex problem
  831. Unsolved Equation
  832. Professor
  833. Signboard injury
  834. Professor's Lab
  835. Two beers
  836. Temperature of Iron.
  837. Five Rooms puzzle
  838. Another Site's Questions
  839. Fox, Sheep, Cabbage problem - revisited
  840. Light Switches
  841. High-voltage!
  842. a wicked master
  843. Google Labs Aptitude Test
  844. Parenthize
  845. How old are my daughters?
  846. tricky lockers...
  847. pyramids
  848. Feilds on the edge of town
  849. Fox sheep cabbage - mind emotions body
  850. [SOLVED] Two fat guys
  851. 5th grade brain teaser
  852. Sister probability
  853. Hydrogen Room
  854. the product
  855. Crack the code!
  856. 12 red snooker balls
  857. Ten Digit Numbers
  858. expert puzzle
  859. Doobie weigher
  860. Nine Digit Numbers
  861. Balls in boxes ( probability )
  862. Simple number game
  863. beans
  864. Forty 1lb Weights
  865. handshakes
  866. cultural groups
  867. blind man
  868. I lost my calculator batteries in a flood.....
  869. truth teller vs liar : go to Hell !
  870. Bridge Circuit
  871. Three-Dimensional Resistance
  872. Coloured Hats
  873. Infinite Ladder Network
  874. Math Problem
  875. From D to M, how far and what way
  876. Riddles!
  877. Teasing your brain
  878. 1+1= ?
  879. Two old men....
  880. Two Cubes in 3d
  881. Slice the Donut
  882. brownies
  883. Going off on a tangent.....
  884. Last geometry challenge (very difficult)
  885. A Geometry challenge
  886. center of mass
  887. Logic Problem – test your logic
  888. What does a soda cost?
  889. A rolling problem
  890. Read the mixed up words
  891. Philosophical Beliefs
  892. More Dice
  893. Box Clever
  894. fake coin #2
  895. fake coin
  896. the door story
  897. next door neighbours
  898. Medication problem
  899. Who owns the fish?
  900. riddle poem
  901. more strange words
  902. check or bet
  903. total distance
  904. How old are they?
  905. Strange words...
  906. Quickie
  907. What can you share yet still have all for yourself
  908. I live just over a star, and yet I do not burn
  909. Petals Around The Roses
  910. Row, Row, Row your boat...
  911. R = PI Ohms
  912. Flowers (hope this one lasts a bit longer)
  913. Scouts
  914. Drawing a path
  915. Crossing the desert (in a steam powered car)
  916. $60,000.00 question
  917. Hats
  918. Black's last move?
  919. Searching for a non-negative integer...
  920. Color of Bear Puzzle
  921. tiles
  922. Help
  923. Kind of Riddle
  924. 5 Star Logic Problem (100 prisoners and a light bulb)
  925. Paint mixing
  926. Canned Hams - quickie
  927. what came first?
  928. Shock absorber
  929. beer story
  930. Digging to China
  931. Math related riddle!!!
  932. Late for school?
  933. Rope clocks
  934. Impish Sprite
  935. d[x[sup]2[/sup]]/dx = x
  936. Triangle Puzzle
  937. riddle
  938. a wolf, a goat and cabbage
  939. Brian Teaser++++++++
  940. Quickie
  941. new riddle
  942. Hats Off to the Ministers
  943. Brain Teaser #98
  944. riddle
  945. lying about truth
  946. simple code
  947. Brain Teaser #94
  948. Brain Teaser #93
  949. Brain Teaser #92
  950. Brain Teaser #91
  951. Brain Teaser #90
  952. Help needed on a brainteaser
  953. Brain Teaser #89
  954. reTurn Time - 3
  955. Brain Teaser #87
  956. reTurn Time - 2
  957. reTurn the time
  958. Brain Teaser #84
  959. Brain Teaser #83 (and I promise there is only one right answer)
  960. Brain Teaser #82
  961. Brain Teasers Open to All
  962. Brain Teaser #81
  963. Brain Teaser #80
  964. Brain Teaser #79
  965. Brain Teaser #78
  966. Brain Teaser #77
  967. Brain Teaser #76
  968. Brain Teaser #75
  969. Brain Teaser #74
  970. Brain Teaser #73
  971. Brain Teaser #72
  972. Brain Teaser #71
  973. Brain Teaser #70
  974. Brain Teaser #69
  975. Brain Teaser #68
  976. Brain Teaser #67
  977. Brain Teaser #66
  978. Brain Teaser #65
  979. Brain Teaser #64
  980. Brain Teaser #63
  981. Brain Teaser #62
  982. Brain Teaser #61
  983. Brain Teaser #60
  984. Brain Teaser #59
  985. Brain Teaser #58
  986. Brain Teaser #57
  987. Brain Teaser #56
  988. Einstein's Intelligence Quiz ?
  989. Brain Teaser #45
  990. Brain Teaser #54
  991. Brian Teaser #53
  992. Brain Teaser #52
  993. Brain Teaser #51
  994. Logic puzzle
  995. Brain Teaser #50
  996. Brain Teaser #49
  997. Brain Teaser #48
  998. Brain Teaser #47
  999. Brain Teaser #46
  1000. Brain Teaser #45
  1001. Brain Teaser #44
  1002. Brain Teaser #43
  1003. Brain Teaser #42
  1004. Brain Teaser #41
  1005. Brain Teaser #40
  1006. Brain Teaser #39
  1007. Brain Teaser #38
  1008. Brain Teaser #37
  1009. Brain Teaser #36
  1010. Brain Teaser #35
  1011. Brain Teaser #34
  1012. Brain Teaser #33
  1013. Brain Teaser #32
  1014. Brain Teaser #31
  1015. Brain Teaser #30
  1016. Brain Teaser #29
  1017. Brain Teaser #28
  1018. Brain Teaser #27
  1019. Brain Teaser #26
  1020. Brain Teaser #25
  1021. Brain Teaser #24
  1022. Brain Teaser #23
  1023. Brain Teaser #22
  1024. Brain Teaser #21
  1025. Brain Teaser #21
  1026. Brain Teaser #20
  1027. Brain Teaser #19
  1028. Brain Teaser #18
  1029. Brain Teaser #17
  1030. Brain Teaser #16
  1031. Brain Teaser #15
  1032. Brain Teaser #14
  1033. Brain Teaser #13
  1034. Brain Teaser #12
  1035. Brain Teaser #11
  1036. Brain Teaser #10
  1037. Brain Teaser #9
  1038. Brain Teaser #8
  1039. Brain Teaser #7
  1040. Brain Teaser #6
  1041. Brain Teaser #5
  1042. Brain Teaser #4
  1043. Question #3
  1044. Question #2
  1045. Question #1