User Joe Z.

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answer

2k

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

chess construction

2d ago bobble 6,550

16

votes

4

answers

5k

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The Mexican Standoff

Dec 25 at 1:17 bobble 6,550

15

75

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15

answers

81k

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A camel transporting bananas

mathematics calculation-puzzle optimization

Nov 11 at 20:18 Leonid 1

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votes

7

answers

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

4

10

votes

6

answers

2k

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A tricky batch of four number sequences

number-sequence

Jul 28 at 2:19 Culver Kwan 5,212

2

11

votes

5

answers

732

views

Professor Halfbrain's infinite chessboard theorems

mathematics combinatorics checkerboard

Jul 7 at 4:40 justhalf 2,389

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16

votes

3

answers

24k

views

What's the fewest weights you need to balance any weight from 1 to 40 pounds?

calculation-puzzle combinatorics weighing

Mar 8 at 23:31 user1153980 121

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2

answers

6k

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Can you solve this devilish Junior Jumble?

wordplay anagram

Jan 4 '20 at 22:28 Gareth McCaughan♦ 102k

8

46

votes

10

answers

173k

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1 2 3 4 5 6 7 8 9 = 100

mathematics calculation-puzzle formation-of-numbers

Sep 22 '19 at 6:34 Community♦ 1

14

60

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9

answers

100k

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Twelve balls and a scale

strategy combinatorics weighing

Sep 27 '18 at 5:06 Mr Pie 6,538

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13

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4

answers

5k

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The Puzzle of the Locked Box

logical-deduction story keys-and-locks

May 14 '18 at 16:54 Community♦ 1

1

6

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1

answer

535

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Arranging cards in rows

mathematics strategy

May 9 '18 at 14:41 Community♦ 1

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14

votes

7

answers

2k

views

Twelve balls on a scale, where one ball is lighter and another is heavier

mathematics strategy weighing

May 2 '18 at 12:48 puzzledPig 3,461

5

votes

2

answers

552

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Choosing units for drug testing

calculation-puzzle

Mar 2 '18 at 10:59 Community♦ 1

2

4

votes

2

answers

624

views

What's the largest number that can be obtained in the process of solving a numbers game on Countdown?

calculation-puzzle optimization formation-of-numbers

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1

10

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2

answers

416

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A cell in an infinite culture

mathematics calculation-puzzle probability

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20

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11

answers

4k

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What's wrong with this line in a baking recipe book?

language real

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21

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4

answers

7k

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Picking up stones

mathematics strategy game

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3

14

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1

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7k

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Fastest way to cross a river: four people with different rowing speeds

logical-deduction river-crossing

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3

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1

answer

900

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Calculate a mystery number: Add the number of United States …

mathematics calculation-puzzle knowledge

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13

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1

answer

396

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Which star is this?

outer-space

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5

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1

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588

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What is an Endless Phrase™?

pattern english

Nov 7 '16 at 23:46 Community♦ 1

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10

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2

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1k

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A rather curious division machine

mathematics

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Only Connect - Connect Wall #1

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789

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Can you figure out these Tom Swifties?

wordplay english

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988

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A small pandigital equation

calculation-puzzle

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A sequence defined by a single fraction

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A rope-cutting problem

lateral-thinking

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How do you create a general locked-box problem?

puzzle-creation keys-and-locks

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What is the area of the Pokémon Moon logo?

mathematics geometry

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73 Questions

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

The Mexican Standoff

A camel transporting bananas

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

A tricky batch of four number sequences

Professor Halfbrain's infinite chessboard theorems

What's the fewest weights you need to balance any weight from 1 to 40 pounds?

Can you solve this devilish Junior Jumble?

1 2 3 4 5 6 7 8 9 = 100

Twelve balls and a scale

The Puzzle of the Locked Box

Arranging cards in rows

Twelve balls on a scale, where one ball is lighter and another is heavier

Choosing units for drug testing

What's the largest number that can be obtained in the process of solving a numbers game on Countdown?

A cell in an infinite culture

What's wrong with this line in a baking recipe book?

Picking up stones

Fastest way to cross a river: four people with different rowing speeds

Calculate a mystery number: Add the number of United States …

Which star is this?

What is an Endless Phrase™?

A rather curious division machine

Only Connect - Connect Wall #1

Can you figure out these Tom Swifties?

A small pandigital equation

A sequence defined by a single fraction

A rope-cutting problem

How do you create a general locked-box problem?

What is the area of the Pokémon Moon logo?