New posts in Recreational Mathematics

For what natural $n$ does there exist a square composed of $n$ squares?

Arbitrarily long palindromes in two consecutive number bases

Shortest distance around a pyramid

Is there more to this relationship with the Fibonacci numbers?

How to get $6$ from the numbers $\{6, 7, 8, 9\}$ using only addition, subtraction, division, and multiplication.

Minimal Rook Difference Grids

Independence problem: one rook and maximum number of knights on the chessboard $8 \times 8$

Can an $(a,b)$-knight reach every point on a chessboard?

Graceful graphs with Valence $k$

How to minimise the cost of guessing a number in a high/low guess game?