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wu :: forums    riddles    hard (Moderators: ThudnBlunder, SMQ, Eigenray, towr, Icarus, william wu, Grimbal) Pages: 1 ... 12 13 14 15 16  ...  27 Start new topic    Subject Started by Replies Views Last post Climate (opposite points on a sphere) Grimbal 4 739 Jul 6th, 2006, 12:37am by Grimbal Criminal Cupbearer robcataus 5 1371 Jun 25th, 2006, 12:48pm by Icarus Pile Transition jetplan 4 946 Jun 22nd, 2006, 6:30pm by Icarus Proving the 4-color theorem Icarus 8 4144 Jun 22nd, 2006, 8:36am by Cahit Fixing the D'Armandean Maze Icarus 17 926 Jun 17th, 2006, 8:34am by Grimbal THE LAST 1000 DIGITS: Puzzle Extension K Sengupta 1 718 May 28th, 2006, 2:22am by JocK Polynomial of Infinite Degree « Pages 1 2 » Michael Dagg 25 4462 May 22nd, 2006, 8:54am by alien Moved: Elevator Ride ladyslupe13 0 606 May 19th, 2006, 8:08pm by Icarus A collaboration game for three JocK 8 898 May 10th, 2006, 6:17pm by Icarus Six points in the plane NickH 7 881 Apr 27th, 2006, 8:46am by Grimbal Lost in the woods mallman 6 1488 Apr 6th, 2006, 5:43am by Margit Lost in the woods mallman 4 775 Apr 13th, 2006, 3:06pm by Icarus Infinite expected value coin-flip game River Phoenix 8 3658 Apr 8th, 2006, 6:28am by towr A perfect cube built with bricks? ecoist 6 1105 Apr 3rd, 2006, 11:53pm by Barukh A  "Mod 625" Puzzle K Sengupta 1 712 Apr 3rd, 2006, 4:00am by Barukh A Definite Power Puzzle K Sengupta 0 657 Apr 2nd, 2006, 9:15am by K Sengupta The infinite four-color theorem « Pages 1 2 » Deedlit 33 6811 Feb 26th, 2006, 12:53pm by Cahit An Atypical Evaluation K Sengupta 2 819 Feb 21st, 2006, 6:49am by towr unexpected exam pardox gkedem 1 728 Feb 12th, 2006, 11:31am by Icarus Periodic Poles Icarus 7 1634 Feb 11th, 2006, 8:11am by Icarus Ingram's Family K Sengupta 6 1042 Feb 10th, 2006, 11:32pm by K Sengupta Impish Pixie revisited « Pages 1 2 » FredFnord 33 7760 Feb 10th, 2006, 7:21am by rmsgrey A cube of friends Sorites 3 753 Feb 8th, 2006, 9:16pm by Eigenray An Unusual Recurrence Relation K Sengupta 1 623 Feb 5th, 2006, 11:53pm by Barukh A Cubic And Inscribed Problem? K Sengupta 4 648 Feb 5th, 2006, 1:47pm by pex next item in the sequence Ownage 2 499 Feb 4th, 2006, 4:11pm by Grimbal Matchsticks Arrangement Barukh 7 711 Feb 2nd, 2006, 1:10am by Barukh Sharing secrets towr 12 845 Jan 30th, 2006, 10:40am by towr Playing with Chips inexorable 6 659 Jan 25th, 2006, 1:17pm by JocK 8-digit squares fatball 3 997 Jan 24th, 2006, 6:05am by Eigenray Pages: 1 ... 12 13 14 15 16  ...  27 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 Forum Jump: ----------------------------- riddles -----------------------------  - easy   - medium => hard   - what am i   - what happened   - microsoft   - cs   - putnam exam (pure math)   - suggestions, help, and FAQ   - general problem-solving / chatting / whatever ----------------------------- general -----------------------------  - guestbook   - truth   - complex analysis   - wanted   - psychology   - chinese

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