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wu :: forums    riddles    hard (Moderators: ThudnBlunder, Eigenray, Icarus, william wu, SMQ, Grimbal, towr) Pages: 1 ... 16 17 18 19 20  ...  27 Start new topic    Subject Started by Replies Views Last post close-to-regular perfect tetrahedra JocK 9 1941 Jun 13th, 2005, 2:13pm by JocK unique voting amia 5 557 Jun 10th, 2005, 2:08pm by JocK hidden signaling II amia 10 631 Jun 8th, 2005, 12:23am by amia The one having to do with just coins, letters, and Eric Sw 1 430 Jun 6th, 2005, 9:37pm by Deedlit Another (unusual) Number Game « Pages 1 2 » Barukh 33 4300 Jun 1st, 2005, 11:17pm by Deedlit Where Smullyan went wrong « Pages 1 2 » Jonathan the Red 40 8119 Jun 1st, 2005, 3:51pm by Icarus hidden signaling « Pages 1 2 » amia 43 2969 May 31st, 2005, 4:14am by Deedlit Unusual Number Game 2.0 Deedlit 9 2039 May 28th, 2005, 6:59am by Deedlit Coin flip game Deedlit 13 1494 May 27th, 2005, 9:36am by TenaliRaman Take the last chip « Pages 1 2 » BNC 32 2994 May 25th, 2005, 2:35pm by Deedlit Hard- rotten apple Your name here 9 6448 May 24th, 2005, 11:00am by Deedlit Seven boolean questions daniel 7 2880 May 23rd, 2005, 10:18am by towr Three Dimensional Random Walk « Pages 1 2 3 » william wu 55 11872 May 23rd, 2005, 1:18am by Deedlit Chicken nuggets SSS 9 5525 May 22nd, 2005, 11:40pm by Barukh Name the cards puzdispenser 1 1636 May 21st, 2005, 1:59am by Deedlit 6 digit number... h2 3 2022 May 17th, 2005, 8:27pm by SWF Adding signs to make 100 elway 9 1605 May 14th, 2005, 5:19am by krishna366 Execution strategy in a matrix, with constraints « Pages 1 2 » yappuzzler 29 3235 May 11th, 2005, 9:37am by SMQ Number game « Pages 1 2 » Deedlit 27 2465 May 8th, 2005, 8:43pm by Deedlit SQUARE FORMATION s d snieder 4 1767 May 8th, 2005, 7:14pm by SWF The tortoise and the hare « Pages 1 2 » Deedlit 29 4657 May 5th, 2005, 10:13pm by Deedlit Geometry - Equilateral Triangle Earendil 1 1439 Apr 25th, 2005, 6:01am by Barukh Is sqrt(pi) as special as pi? Michael Dagg 3 1353 Apr 22nd, 2005, 11:00am by Sjoerd Job Postmus Maximize chain reaction Leo Broukhis 18 1777 Apr 21st, 2005, 6:06am by SMQ Minimize time. (Some physics) Earendil 8 1586 Apr 20th, 2005, 5:33pm by SWF Chess Markov Chain Earendil 9 5203 Apr 19th, 2005, 3:27pm by Deedlit thematrixisreal.com fred 2 1708 Apr 19th, 2005, 5:16am by Grimbal Representation Schemes for Natural Numbers Barukh 5 521 Apr 17th, 2005, 5:27am by Deedlit Products of powers of consecutive integers NickH 1 640 Apr 17th, 2005, 4:35am by Deedlit Well-ordered hat execution Eigenray 17 4503 Apr 13th, 2005, 8:48pm by Deedlit Pages: 1 ... 16 17 18 19 20  ...  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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