Wigan went all out in search of a late victory, with Saints captain James Graham denying Sam Tomkins with a flying tackle, and Richards twice going close to bagging his third try of the afternoon.

BBC: Wigan Warriors 28-24 St Helens

But he was thwarted by a superb flying Fox tackle that epitomised Rovers' gutsy defensive performance.

BBC: Hull KR 25-6 Leeds

Halfpenny seemed set to sneak in at the corner flag, only for his foot to be dragged into touch by a flying tap-tackle from Edinburgh scrum-half Mike Blair.

BBC: Blues 18-17 Edinburgh

Normally, this time of year, rooms are filling up and tackle is flying off the shelves.

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Further pressure from the Exiles yielded a fourth penalty but a head-high tackle by Delon Armitage on the flying Doug Howlett enabled O'Gara to trim the gap to 15-6 at the break.

BBC: London Irish 23-17 Munster

The trick is writing software and algorithms that tackle industry-specific problems, such as flight scheduling that keeps pilots below flying limits and financial models that account for the cost of currency exchanges.

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