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All tied up
What do tying your shoe laces and Santa's Christmas Eve journey have in common?
Nineteenth-century German mathematician Leopold Kronecker once said God created the integers, all the rest is the work of man.
What tactics should a soccer player use when taking a penalty kick? And what can the goalkeeper do to foil his plans? John Haigh uses Game Theory to find the answers, and looks at his World Cup predictions from last issue.