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Welcome to perplexus.info, flooble's perplexing puzzle portal. Here, we collect all sorts of puzzles, from simple logic questions and word tricks to in-depth math problems like probability and geometry. Click around and see if your brain is up to the task! If you're new here, make sure you sign up so that you can leave comments and submit your own problems!
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A quotation is to be filled in in the grid below. Black squares represent spaces between words and possibly punctuation. The word or phrase preceding the colon (:) merely identifies the topic. The words after the colon are the quote itself, or a definition, according to the author, of the topic subject.

Yellow squares are to take one of the letters from the yellow squares at the top in the same column. White squares are to take one of the letters from the white squares to the left in the same row. Each shown letter is used exactly once. Only black squares can separate words, not line breaks, and remember that black squares can possibly represent punctuation, such as an apostrophe.

When completed, you'll have the full quotation.

author: ARTHUR M. RAMSEY
E A E A F A D E N A
N M I E R E E G O B
R S I T U I E N T O
R T N T P O R P
T Y P U O Y U
A F H I :
D F T T
E H S
A M S T
O R
A E E O
K O T
L N S S
E H N O
G I S

(No Solution Yet, 1 Comments) Submitted on 2016-12-09 by Charlie   
Difficulty: 2 of 5 Bonus: Integer Rep (in Numbers) Rating: 3.50
Show that for any integer n there exists integers i, j, and k such that

n = i2 + j2 - 5k2

L.E. Dickson
(Solution Posted, 2 Comments) Submitted on 2005-11-24 by Bractals   
Difficulty: 3 of 5Gluing Cubes (in Shapes)
Posted on 2016-12-08 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 4 of 5A ragman from 3 to 10 (in Word Problems)
Posted on 2016-12-07 by Ady TZIDON (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Moving Two Rooks (in Games)
Posted on 2016-12-06 by Brian Smith (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Animal/Vegetable/Mineral (in Word Problems)
Posted on 2016-12-05 by Charlie (Solution Posted, 2 Comments)
Difficulty: 3 of 5Four integers (in Numbers)
Posted on 2016-12-04 by Ady TZIDON (No Solution Yet, 3 Comments)
Difficulty: 4 of 5Get all the Real Parts of the Problem (in Just Math)
Posted on 2016-12-03 by Brian Smith (No Solution Yet, 0 Comments)
Difficulty: 4 of 5Vieta's derivatives (in Just Math)
Posted on 2016-12-02 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5A biased random walk (in Probability)
Posted on 2016-12-01 by Ady TZIDON (No Solution Yet, 1 Comments)
Difficulty: 4 of 57+8=12 ?? (in Just Math) Rating: 3.00
Posted on 2016-11-30 by Ady TZIDON (No Solution Yet, 2 Comments)
Difficulty: 2 of 5composite function (in Calculus) Rating: 3.00
Posted on 2016-11-29 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Site Seeing (in Word Problems) Rating: 3.00
Posted on 2016-11-28 by Charlie (Solution Posted, 2 Comments)
Difficulty: 3 of 5Two Non-overlapping Triangles (in Geometry)
Posted on 2016-11-27 by Brian Smith (No Solution Yet, 0 Comments)
Difficulty: 3 of 5Seven Hexominos and Two Triominos (in Shapes)
Posted on 2016-11-26 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 526 out of 50 (in Just Math) Rating: 4.00
Posted on 2016-11-25 by Ady TZIDON (No Solution Yet, 10 Comments)

Recently Posted Solutions:
Difficulty: 2 of 5Animal/Vegetable/Mineral (in Word Problems)
Submitted By Charlie. Solution posted on 2016-12-07 16:02:20
Difficulty: 2 of 5Word Square Scramble (in Word Problems)
Submitted By Charlie. Solution posted on 2016-12-04 20:21:18
Difficulty: 2 of 5Prime+reversal= prime (in Numbers)
Submitted By Ady TZIDON. Solution posted on 2016-12-03 10:06:20
Difficulty: 2 of 5Site Seeing (in Word Problems)
Submitted By Charlie. Solution posted on 2016-12-01 08:22:16
Difficulty: 2 of 5Topical Quotation I (in Word Problems)
Submitted By Charlie. Solution posted on 2016-12-01 08:21:48
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