mau

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puzzle-history

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17 Questions

Votes Activity Newest Views

votes

answers

views

A clock for 2017

mathematics formation-of-numbers

Apr 13 '19 at 12:08 Mr Pie 6,564

votes

answers

views

prove that 2016 is a self-composable number

mathematics

Feb 22 '16 at 18:03 hexomino 116k

votes

answers

623

views

Socks which may or may not match

probability

Jun 6 '16 at 7:55 JBentley 343

votes

answers

859

views

Near-fill with 3x1 long triominos, how to do a different void square than the center square?

dissection tiling polyomino packing

May 29 '19 at 0:58 micsthepick 3,666

votes

answers

views

Yet another matchstick puzzle

calculation-puzzle matches

Mar 28 '17 at 15:33 Community♦ 1

votes

answer

919

views

A building with an odd elevator

mathematics calculation-puzzle

Feb 5 '15 at 13:37 Gamow 44.3k

votes

answer

623

views

origin of the "missing dollar puzzle"

puzzle-history

Mar 18 '16 at 15:57 Community♦ 1

votes

answer

views

Of men and hats

logical-deduction hat-guessing

Jun 4 '15 at 0:49 Community♦ 1

votes

answer

444

views

How many cubes are crossed by a diagonal?

mathematics three-dimensional

Nov 24 '18 at 0:49 Gareth McCaughan♦ 108k

votes

answers

views

smallest number obtainable from 2020

formation-of-numbers

Dec 18 '19 at 21:23 Victor Stafusa 8,673

votes

answers

views

Obtain four equal parts with a single cut

dissection

Jul 7 '17 at 1:19 ETHproductions 223

votes

answers

views

How did I split the alphabet?

pattern

Apr 27 '15 at 6:02 Len 8,764

votes

answers

274

views

Turn of a friendly card

mathematics

Jul 18 '17 at 2:47 Community♦ 1

votes

answer

140

views

make a sum with cards

calculation-puzzle cards

Aug 12 '18 at 16:50 Evargalo 4,424

votes

answers

13k

views

clock values using just "9" (and some operators)

calculation-puzzle

Aug 27 '19 at 13:40 R N Das 1

vote

answers

254

views

Can you reach 2020?

formation-of-numbers

Dec 19 '19 at 23:50 Michał Wójcik 716

vote

answer

158

views

From 2019 to digits

calculation-puzzle

Dec 24 '18 at 5:20 S. M. 1,115

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17 Questions

A clock for 2017

prove that 2016 is a self-composable number

Socks which may or may not match

Near-fill with 3x1 long triominos, how to do a different void square than the center square?

Yet another matchstick puzzle

A building with an odd elevator

origin of the "missing dollar puzzle"

Of men and hats

How many cubes are crossed by a diagonal?

smallest number obtainable from 2020

Obtain four equal parts with a single cut

How did I split the alphabet?

Turn of a friendly card

make a sum with cards

clock values using just "9" (and some operators)

Can you reach 2020?

From 2019 to digits