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Cryptic Crosswords
Challenges
About
Feb
20
Feb 20
Isambard Kingdom Brunel's Coin
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Oddities
Feb
17
Feb 17
Ring and Chain Trick
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Magic
Feb
16
Feb 16
Staunton Chess Sets
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Chess
,
Design
,
History
Feb
15
Feb 15
Credit Card Checks
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Computing
,
Mathematics
Feb
14
Feb 14
The Future Library Project
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Literature
,
Futurology
Feb
13
Feb 13
The Recycling Symbol
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Design
,
Topology
Feb
10
Feb 10
The Scandinavian Defence
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Chess
Feb
9
Feb 9
The Utility Problem on a Torus
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Graph Theory
Feb
8
Feb 8
Kriegspiel
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Chess
,
Board Games
Feb
7
Feb 7
The Chinese Railways
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Puzzles
,
Dudeney
Feb
6
Feb 6
Cities in the Skies of Venus
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Science
Feb
3
Feb 3
2d6 or d4+d8
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Statistics
,
Game Theory
Feb
2
Feb 2
Quads and Quods
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Game Theory
Feb
1
Feb 1
Centigrade, Celsius and Kelvin
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Science
Jan
31
Jan 31
The SI Base Units
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Science
,
Physics
,
Chemistry
Jan
27
Jan 27
Urinal Numbers
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Mathematics
Jan
26
Jan 26
The Happy Ending Problem
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Mathematics
Jan
25
Jan 25
Pigeons vs The Internet
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Computing
Jan
24
Jan 24
‽
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Language
,
Opinion
Jan
23
Jan 23
I'm Growing an Amaryllis
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Biology
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