The worst poet in history, the worst tank ever made, the worst performance by a chess master, and the worst smell.

William McGonagall is widely recognised as the worst poet in history: “Beautiful Railway Bridge of the Silv’ry Tay! / Alas! I am very sorry to say / That ninety lives have been taken away / On the last Sabbath day of 1879, / Which will be remember’d for a very long time.”

New Zealand’s World War II tank was made with a tractor, corrugated iron, machine guns, and a mattress.

In 1951, International Master Robert Wade had exhibition matches against 30 teenage schoolboys from Moscow. He would not win one game.

Half a cup of Thioacetone can be smelt three quarters of a kilometre away – it is perhaps the worst smell in the world.