User Joe Z.

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A cell in an infinite culture

Nov 1 '17 at 18:31 Rand al'Thor 108k

1

10

votes

2

answers

1k

views

A rather curious division machine

mathematics

Sep 20 '16 at 14:41 Joe Z. 26.8k

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votes

5

answers

2k

views

Only Connect - Connect Wall #1

pattern knowledge connect-wall

Aug 3 '16 at 7:31 f'' 32.2k

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answer

644

views

What's the teacher's fractional addition algorithm?

mathematics

Jun 14 '15 at 23:55 Joe Z. 26.8k

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4

answers

10k

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N balls and a scale

mathematics combinatorics weighing

May 18 '15 at 19:30 Community♦ 1

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votes

1

answer

871

views

Why are these numbers above the line?

mathematics pattern

Feb 25 '15 at 1:04 xnor 23k

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votes

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answer

557

views

What is God's Number for the Rubik's Picture Cube?

rubiks-cube mechanical-puzzles

Jan 25 '15 at 0:30 Christopher Mowla 336

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The Magic Stick

calculation-puzzle

Jun 23 '14 at 21:37 Community♦ 1

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What chess position has the longest string of moves before mate?

chess construction

2d ago bobble 6,550

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A rope-cutting problem

lateral-thinking

Jun 6 '16 at 19:38 Xxoplechic 113

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1

answer

2k

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What is the area of the Pokémon Moon logo?

mathematics geometry

May 28 '16 at 17:14 Community♦ 1

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votes

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249

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One, two, and three weeks from now

enigmatic-puzzle computer-puzzle

Sep 10 '15 at 3:55 Quark 6,017

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votes

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Moving a pawn around on a chessboard

checkerboard

May 20 '14 at 22:57 Doorknob 4,477

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votes

5

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789

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Can you figure out these Tom Swifties?

wordplay english

Jul 3 '16 at 19:00 Community♦ 1

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438

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A sequence defined by a single fraction

calculation-puzzle number-sequence

Jun 17 '16 at 16:53 Joe Z. 26.8k

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A lot of these firms were never watched by me

wordplay movies

Oct 1 '15 at 10:46 Community♦ 1

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votes

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2k

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Travellers across a desert

calculation-puzzle word-problem

Sep 19 '15 at 17:57 Community♦ 1

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1k

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A crypto-sequence puzzle

cipher number-sequence

Jun 25 '15 at 14:32 Community♦ 1

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496

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Drawing lines on a map

mathematics geometry

Jul 3 '14 at 6:56 Logan M 891

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votes

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9k

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Maximum number of pieces of equal area you can obtain by cutting a pizza a certain number of times

geometry dissection

Nov 3 at 22:49 humn 20.8k

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votes

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988

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A small pandigital equation

calculation-puzzle

Jun 18 '16 at 1:04 Deusovi♦ 116k

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Bottles of wine, poisoned with time

logical-deduction strategy word-problem

Mar 11 '16 at 3:56 Community♦ 1

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votes

1

answer

796

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What is the fewest number of clues on a rotationally symmetrical sudoku grid with a unique solution?

sudoku

Sep 13 '15 at 10:11 Community♦ 1

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votes

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526

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Driving from London to Paris to Berlin

lateral-thinking geography

Apr 29 '15 at 20:39 Joe Z. 26.8k

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535

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Arranging cards in rows

mathematics strategy

May 9 '18 at 14:41 Community♦ 1

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votes

1

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685

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Are there any sets of 9 numbers that can form two essentially distinct magic squares?

mathematics magic-square

Nov 2 '15 at 16:21 f'' 32.2k

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votes

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552

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Choosing units for drug testing

calculation-puzzle

Mar 2 '18 at 10:59 Community♦ 1

5

votes

1

answer

588

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What is an Endless Phrase™?

pattern english

Nov 7 '16 at 23:46 Community♦ 1

5

votes

2

answers

858

views

How do people decide which words to use in crossword puzzles?

puzzle-creation crosswords

Apr 9 '16 at 11:51 Beastly Gerbil 44.4k

1

5

votes

4

answers

2k

views

Fire in a crowded theatre

lateral-thinking situation history

Mar 23 '16 at 17:05 Gamow 44k

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73 Questions

A cell in an infinite culture

A rather curious division machine

Only Connect - Connect Wall #1

What's the teacher's fractional addition algorithm?

N balls and a scale

Why are these numbers above the line?

What is God's Number for the Rubik's Picture Cube?

The Magic Stick

What chess position has the longest string of moves before mate?

A rope-cutting problem

What is the area of the Pokémon Moon logo?

One, two, and three weeks from now

Moving a pawn around on a chessboard

Can you figure out these Tom Swifties?

A sequence defined by a single fraction

A lot of these firms were never watched by me

Travellers across a desert

A crypto-sequence puzzle

Drawing lines on a map

Maximum number of pieces of equal area you can obtain by cutting a pizza a certain number of times

A small pandigital equation

Bottles of wine, poisoned with time

What is the fewest number of clues on a rotationally symmetrical sudoku grid with a unique solution?

Driving from London to Paris to Berlin

Arranging cards in rows

Are there any sets of 9 numbers that can form two essentially distinct magic squares?

Choosing units for drug testing

What is an Endless Phrase™?

How do people decide which words to use in crossword puzzles?

Fire in a crowded theatre