A new mathematical proof was in the news this week, which partially solves the Erdos Discrepancy Problem. The proof was described as "bigger than Wikipedia". I attempt to explain the problem using a puzzle which you can try at home.
The puzzle was my idea to explain it to you - that's not really how the problem is stated.
New Scientist: http://www.newscientist.com/article/dn25068-wikipediasize-maths-proof-too-big-for-humans-to-check.html#.UwdX6_l_uSp
The Independent: http://www.independent.co.uk/life-styl
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