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List Question

Optimization Puzzle

find all positive integers satisfying $2x^2 - y^{14} = 1$

puzzle about array of numbers

Two ants on a triangle puzzle

Jack's birthday riddle

A riddle about guessing hat colours (which is not among the commonly known ones)

Lower bound in algorithmic puzzle

100 prisoners and a lightbulb

Dividing a square with a hole into two

Having two points of a square and only a compass, how to find the remaining two?

When does $n^2$ divide $2^n+1$?

Smallest $k$ s.t. $7x+1=9y+2=11z+3=k$, all positive integers

Josephus' Puzzle Basic Java with some basic math.

Calculating Gröbner basis for Sudoku

Can the product $AB$ be computed using only $+, -,$ and reciprocal operators?

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