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Jaap Scherphuis

Netherlands

https://www.jaapsch.net

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Top Questions
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38
Dissecting the exotic bulbfish
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36
Swapping rooks in a 4x4 board
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32
A clock correct three times a day
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32
The No-Straight Maze
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30
Asking uncle's help to divide goats
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29
How can one solve a Rubik's cube without relying on guides/algorithms?
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28
Why will my friend have to grow his beard out?
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26
How few disks are needed to cover a square efficiently?
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24
Controlling a robot blindfolded on a 9x9 grid
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23
In how many different ways can a 9-panel comic grid be used?
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23
What's the maximum number of pegs you can leave on a 15-hole triangular peg solitaire?
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22
A robot surviving on top of a 3x3 platform
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20
Covering an 8x8 grid with X pentominoes
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20
Can all arbuzoids assume the same color?
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20
The Troll, the dwarves and the gloves
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20
Diagonals in a 5x5 Grid
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20
A fancy man talking nonsense
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20
Film plots explained badly
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19
Measuring Water with a Holey Cube
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18
Ages of mathematician's five children
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18
Doomsday will occur in the year with a triple blue moon
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18
Twisted TV Titles, season 2
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18
Cutting a cross made of 5 equal squares by 2 straight cut into 4 figure to together form a square
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18
Long digital sequence. 16xxxxxxxxxxxxx61
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17
General strategies for solving metal disentanglement puzzles
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17
Piece of Cake for King Solomon
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17
If the second hand goes backwards, starting from 12:00, how long does it take to meet with the minute hand?
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17
Three people wearing hats
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16
Coin removal problem
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16
Is there a configuration of the 8-puzzle where locking a tile makes it harder?
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