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53
A beautiful game of gold and silver coins
math.stackexchange.com

34
Why do I get two different answers for this counting problem?
math.stackexchange.com

25
Best strategy to pick a lock which opens if at least two of its three decimal digit wheels are dialed correctly?
math.stackexchange.com

24
Expected Value of a Determinant
math.stackexchange.com

23
Resigning (Inevitable Checkmate)
chess.stackexchange.com

20
Pressing the clock using the same hand you use to move the pieces
chess.stackexchange.com

19
If you exploit Article 12.9 in FIDE's Laws of Chess, is it possible to benefit yourself by purposely receiving a penalty?
chess.stackexchange.com

19
"Simple" beautiful math proof
math.stackexchange.com

16
Is it forbidden to laugh when playing in a chess tournament?
chess.stackexchange.com

15
Does checkmate over ride 50-move rule?
chess.stackexchange.com

14
Do FIDE rules allow listening to music while playing a tournament game?
chess.stackexchange.com

14
How to make the encoding of symbols needs only 1.58496 bits/symbol as carried out in theory?
math.stackexchange.com

13
Are force vectors members of a vector space?
physics.stackexchange.com

13
U-substitution for integral of 1/(1+e^x)dx. What am I doing wrong?
math.stackexchange.com

12
Minimum point of $x^2+y^2$ given that $x+y=10$
math.stackexchange.com

12
What is the better way to stop blundering all my games?
chess.stackexchange.com

12
If the order in a set doesn’t matter, can we change order of, say, $\Bbb{N}$?
math.stackexchange.com

12
Is it technically incorrect to write proofs forward?
math.stackexchange.com

12
How to make a perpendicular construction in 3 moves?
math.stackexchange.com

12
Find integral when $dx$ is in the numerator
math.stackexchange.com

11
Most efficient strategy for guessing outcome of (fair) dice roll?
math.stackexchange.com

11
If $p$ and $q$ are prime numbers larger than $2$, then $pq + 1 $ is never prime
math.stackexchange.com

11
why does commutativity of addition fail for infinite sums?
math.stackexchange.com

10
Does the normal force require other forces to exist?
physics.stackexchange.com

10
What is accepted and declined in chess moves?
chess.stackexchange.com

10
Is it OK to use personal email ID for faculty job applications or should we use (current) institute's ID
academia.stackexchange.com

10
What makes chess engines so good at chess?
chess.stackexchange.com

10
Showing that a complex number $z$ satisfies $|z|\leq 1$ given a certain condition
math.stackexchange.com

10
Is it common to provide digital notes (slides or handwritten) for students?
academia.stackexchange.com

10
How much time on my clock do I have to lose before it is legal to stop notating?
chess.stackexchange.com

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