wu :: forums
wu :: forums - hard

Welcome, Guest. Please Login or Register.
Sep 21st, 2014, 5:06am

RIDDLES SITE WRITE MATH! Home Home Help Help Search Search Members Members Login Login Register Register
   wu :: forums
   riddles
   hard
(Moderators: william wu, Eigenray, Grimbal, SMQ, towr, Icarus, ThudnBlunder)
Pages: 1 2 3  ...  26 Start new topic Start new topic 
  Subject Started by Replies Views Last post
100 prisoners & a lightbulb
« Pages 1 2 »
SMQ 26 30845 Nov 26th, 2012, 4:59pm
by Paul Hammond
Unsolved Problems in the Hard Forum
« Pages 1 2 »
Icarus 35 34201 Jan 28th, 2010, 11:12am
by brac37
POST WHAT AM I PUZZLES TO WHAT AM I FORUM william wu 0 15277 Jan 30th, 2003, 12:12am
by william wu
ANSWERS VS. PROBLEM-SOLVING PROCESSES william wu 17 16826 May 10th, 2007, 8:33am
by rmsgrey
Kaggle: Africa Soil Property Prediction Challenge william wu 0 212 Aug 28th, 2014, 12:53pm
by william wu
Two envelopes problem - a variation
« Pages 1 2 »
Altamira_64 26 7962 Aug 25th, 2014, 6:06pm
by dudiobugtron
Polar Bear riddle (plz do not take any help) erica 1 2448 Aug 20th, 2014, 1:10am
by movie4fun
Optimal Fence for Farmer Riddle k2xl 9 441 Aug 14th, 2014, 9:03am
by Grimbal
Bimagic Square Reconstruction Barukh 2 384 Aug 10th, 2014, 5:14pm
by dudiobugtron
The non-negative integers wdcefv 4 936 Jul 29th, 2014, 7:28am
by rmsgrey
Hacking an answering machine II dudiobugtron 11 1240 Jun 4th, 2014, 1:16pm
by dudiobugtron
Rubik's Cube
« Pages 1 2 »
william wu 44 16669 May 22nd, 2014, 1:36pm
by dudiobugtron
Strings of 9s
« Pages 1 2 »
James Fingas 33 6161 May 12th, 2014, 3:14pm
by Dmitriy
Gun with infinite bullets foo 18 4750 May 2nd, 2014, 7:29am
by Grimbal
three-way pistol duel
« Pages 1 2 3 4 5 »
klbarrus 108 44285 Mar 27th, 2014, 6:56pm
by roady
mentally disordered criminals antkor 5 2674 Mar 7th, 2014, 3:43am
by antkor
boxes on europallet riddler358 1 1829 Feb 26th, 2014, 6:00am
by riddler358
Weighings - A sack of rice Altamira_64 8 5289 Feb 25th, 2014, 3:58am
by antkor
Egg Dropping
« Pages 1 2 3 »
Trevor Squires 72 18790 Jan 21st, 2014, 11:01am
by rloginunix
Who can solve this? 2 Eggs 100 Floors Puzzle erica 1 3869 Jan 17th, 2014, 5:04am
by towr
find the password!!! antkor 3 2524 Jan 13th, 2014, 5:00am
by antkor
Moved: The grandfather and the golden coins antkor 0 2157 Jan 10th, 2014, 12:07am
by antkor
13 pirates klbarrus 15 8292 Dec 17th, 2013, 7:46am
by rmsgrey
Polynomial squaring ladders Christine 6 3524 Dec 7th, 2013, 12:31pm
by Christine
integer grid antkor 3 2979 Dec 1st, 2013, 6:53am
by antkor
How fast is Santa flying? Grimbal 22 5269 Nov 6th, 2013, 4:55am
by Grimbal
Crossed Cylinders SWF 4 5010 Oct 29th, 2013, 7:27pm
by rloginunix
5 coins and 5 weighings Altamira_64 23 10095 Oct 20th, 2013, 11:42pm
by jousha22
The Engineer Problem Naumz 5 3840 Oct 2nd, 2006, 5:47pm
by Icarus
Square formation H7 5 6579 Jul 19th, 2007, 2:44am
by towr
Pages: 1 2 3  ...  26 Start new topic Start new topic 

Normal Topic
Hot Topic (More than 15 Replies)
Very Hot Topic (More than 25 Replies)
Locked Topic
Sticky Topic
Sticky Locked Topic

Powered by YaBB 1 Gold - SP 1.4!
Forum software copyright 2000-2004 Yet another Bulletin Board