22 challenges

219 solutions

68 comments

159 users

Most popular tags

numbers text arrays music secret-message one-loop maths
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Recent challenges and solutions

Recent challenges and solutions

+3 votes
9 solutions
483 views
The train line
solved May 7 in Easy by Sir_Rai newbie (4 points)
+1 vote
8 solutions
183 views
Scientific notation
solved Apr 6 in Easy by ravelus beginner (57 points)
+1 vote
9 solutions
109 views
Relatively prime degree
solved Mar 23 in Easy by ravelus beginner (57 points)
+5 votes
17 solutions
286 views
The repeated element
solved Mar 18 in Easy by lasarux beginner (51 points)
+2 votes
10 solutions
269 views
Time interval
solved Mar 9 in Easy by ravelus beginner (57 points)
+5 votes
23 solutions
735 views
Reversing strings
solved Mar 3 in Easy by irudayanath newbie (3 points)
+4 votes
9 solutions
207 views
A hand of cards
solved Dec 8, 2012 in Easy by ravelus beginner (57 points)
+2 votes
9 solutions
348 views
Simple secret messages
solved Dec 6, 2012 in Easy by ravelus beginner (57 points)
+4 votes
3 solutions
210 views
ASCII-art stars
solved Nov 18, 2012 in Medium by wktang newbie (2 points)
+8 votes
12 solutions
195 views
Order with letters
solved Nov 10, 2012 in Easy by ravelus beginner (57 points)
+7 votes
31 solutions
692 views
Letters, one by one
solved Nov 10, 2012 in Easy by ravelus beginner (57 points)
+4 votes
12 solutions
244 views
The 3n+1 problem
solved Nov 10, 2012 in Easy by ravelus beginner (57 points)
+5 votes
14 solutions
260 views
Letter count
solved Nov 10, 2012 in Easy by ravelus beginner (57 points)
0 votes
5 solutions
117 views
Array shuffle
solved Nov 10, 2012 in Easy by ravelus beginner (57 points)
+4 votes
13 solutions
344 views
From roman to decimal
solved Nov 10, 2012 in Easy by ravelus beginner (57 points)
+5 votes
5 solutions
887 views
The little shark
solved Nov 2, 2012 in Hard by juj.malaga newbie (33 points)
+5 votes
12 solutions
432 views
The lost password
solved Oct 31, 2012 in Medium by juj.malaga newbie (33 points)
+5 votes
5 solutions
220 views
Phonewords - from phone numbers to words
solved Oct 29, 2012 in Easy by juj.malaga newbie (33 points)
+4 votes
1 solution
92 views
Enharmonic notes
solved Oct 29, 2012 in Medium by arraclan beginner (54 points)
0 votes
0 solutions
155 views
Scale from key and mode
posted Oct 26, 2012 in Medium by ninjalj amateur (109 points)
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