New posts in recreational-mathematics

Deriving the surface area of a sphere from the volume

Making the water gallon brainteaser rigorous

Largest Numerator of Sum of Egyptian Fractions

Reference Request: what are some books on mathematics you can read without pencil and paper

Best strategy to find a parking spot

Area of a mushroom-shaped curve

"Liar functions": is this a known concept?

Do the differences of perfect squares apply to perfect cubes and more?

A functional relation which is satisfied by $\cos x$ and $\sin x$

Tiling the unit square with right triangles

"8 Dice arranged as a Cube" Face-Sum Equals 14 Problem

When is a Sudoku like table solvable

Is there a sudoku (Latin Square Pattern) state in a Rubik's cube $6\times6\times6?$

Optimal strategy for river crossing game

How Many Clock Hand Positions Swap to a Valid Position?

Optimal Strategy for Deal or No Deal

How to win Matt Parker's jackpot - finding the median of the following distribution

Minimum steps adding edges to form a complete graph

Three piles, can only move stones if doubles a pile. Prove we can always empty a pile.

Zombie Survival: What is the optimal way to place seven entities on an infinite grid to reduce number of adjacent pairs?