2026-04-12

The Skinny Chess Game

Problem illustration

Most chess games happen on a big square board, but 1D Chess happens on a single thin line! With only 8 squares and 6 pieces in total, it is a fast-paced battle where you can only move left or right. It is like a tug-of-war with Kings, Knights, and Rooks. Because the board is so small, some players have even figured out how to win the whole game in just 5 moves! Learn more!

Wee Ones

You have two small squares. If you put them side-by-side, do they make a longer rectangle or a circle?

Little Kids

There are 8 squares in a row. If your Rook is on the 1st square and your King is on the 2nd square, which square is next in the line?

Big Kids

A Knight always jumps exactly 2 squares. If a Knight starts on the very first square (square 1) and makes 2 jumps forward, what square does it land on?

The Sky's the Limit

There are 6 pieces on the board in total (3 for each player). If you closed your eyes and picked one piece at random, what is the probability that it would be one of the 2 Kings?