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Feb 18th, 2019, 11:16pm

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(Moderators: william wu, Icarus, towr, Grimbal, SMQ, ThudnBlunder, Eigenray)
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  Subject Started by Replies Views Last post
5 Card Magic Trick GnomeSain 3 8274 Nov 13th, 2014, 2:37am
by RandyMagic
PPT with a common hypotenuse Christine 0 410 Nov 8th, 2014, 11:38am
by Christine
10-adic numbers Icarus 19 7808 Oct 8th, 2014, 10:31am
by PiotrGrochowski
Hacking an answering machine II dudiobugtron 12 3190 Sep 23rd, 2014, 11:14am
by wakiza33
Connect Four karotto 5 1244 Sep 23rd, 2014, 10:16am
by towr
Kaggle: Africa Soil Property Prediction Challenge william wu 0 1929 Aug 28th, 2014, 12:53pm
by william wu
Two envelopes problem - a variation
« Pages 1 2 »
Altamira_64 26 9913 Aug 25th, 2014, 6:06pm
by dudiobugtron
Polar Bear riddle (plz do not take any help) erica 1 2923 Aug 20th, 2014, 1:10am
by movie4fun
Optimal Fence for Farmer Riddle k2xl 9 1745 Aug 14th, 2014, 9:03am
by Grimbal
Bimagic Square Reconstruction Barukh 2 1522 Aug 10th, 2014, 5:14pm
by dudiobugtron
The non-negative integers wdcefv 4 3303 Jul 29th, 2014, 7:28am
by rmsgrey
Strings of 9s
« Pages 1 2 »
James Fingas 33 7803 May 12th, 2014, 3:14pm
by Dmitriy
Gun with infinite bullets foo 18 8216 May 2nd, 2014, 7:29am
by Grimbal
three-way pistol duel
« Pages 1 2 3 4 5 »
klbarrus 108 56002 Mar 27th, 2014, 6:56pm
by roady
mentally disordered criminals antkor 5 3490 Mar 7th, 2014, 3:43am
by antkor
boxes on europallet riddler358 1 2430 Feb 26th, 2014, 6:00am
by riddler358
Weighings - A sack of rice Altamira_64 8 8706 Feb 25th, 2014, 3:58am
by antkor
Egg Dropping
« Pages 1 2 3 »
Trevor Squires 72 29452 Jan 21st, 2014, 11:01am
by rloginunix
Who can solve this? 2 Eggs 100 Floors Puzzle erica 1 6650 Jan 17th, 2014, 5:04am
by towr
find the password!!! antkor 3 2985 Jan 13th, 2014, 5:00am
by antkor
Moved: The grandfather and the golden coins antkor 0 2723 Jan 10th, 2014, 12:07am
by antkor
13 pirates klbarrus 15 12835 Dec 17th, 2013, 7:46am
by rmsgrey
Polynomial squaring ladders Christine 6 3922 Dec 7th, 2013, 12:31pm
by Christine
integer grid antkor 3 3382 Dec 1st, 2013, 6:53am
by antkor
How fast is Santa flying? Grimbal 22 5776 Nov 6th, 2013, 4:55am
by Grimbal
Crossed Cylinders SWF 4 7450 Oct 29th, 2013, 7:27pm
by rloginunix
5 coins and 5 weighings Altamira_64 23 13523 Oct 20th, 2013, 11:42pm
by jousha22
The Engineer Problem Naumz 5 4181 Oct 2nd, 2006, 5:47pm
by Icarus
Square formation H7 5 7373 Jul 19th, 2007, 2:44am
by towr
airplane riddle benmartorano 3 8639 Oct 11th, 2012, 8:20am
by Altamira_64
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