A better solution for an old problem
83338
Show that there's no continuous function that takes each of its values $f(x)$ exactly twice.
112746
Fixing bad sectors
73497
Getting rid of numbers
139003
Implementing a sort of "tightened frenchspacing"
158880
Another take on canonical answers: Add a "canonical" vote
73984
Alternative for
12291
Two envelope problem revisited
43287
The Spinning Log "Perpetual Motion" problem, and my attempt at a solution
63660
During review, I found a superior solution. What now?
31058
Responding to a poor question
87968
A strange puzzle having two possible solutions
91516
Procedure for reducing the degrees of freedom of an arbitrary system
92983
Posting a Solution of a problem that You faced to Help Newbies
63531
Something simple and yet complex...
25593
Encourage users to select 'Accepted Answer' for old Questions
136703
Is there a term for solving a sub-sub problem of a problem so far removed from the main problem the link is not clear?
52965
make the 2nd line fill up the gaps above