Tonight's top box tips include a Champions league semi-final, Snackmasters looks at Snickers, Cosc explores The Dubliners’ Seven Drunken Nights, and The Syndicate reaches its penultimate stage . . .

Pick of the Day

Live UEFA Champions League, 7.30pm, RTÉ2

We’re into the last four of a money-laden competition that heavily favours the bigger clubs - but still leaves too much to chance for some - as Super League members Real Madrid host former Super League side Chelsea (Kick-off 8.00pm).

Darragh Maloney (below) presents coverage of this Champions League semi-final first-leg tie, which will be played at Estadio Alfredo Di Stefano, the club’s secondary stadium.

Los Blancos (it’s Spanish for 'eternally in debt’ or something) are looking for a record-extending 14th European title and defeated former Super League side Liverpool 3-1 on aggregate in the previous round, with all of the goals coming in the first leg.

Meanwhile, Chelsea manager Thomas Tuchel is hoping to reach the final for the second successive season, having been a runner-up with Qatar-owned Paris Saint-Germain in the previous campaign.

They’ve no fear of Madrid, as they’re undefeated in three previous games against Real and defeated their neighbours Atletico (another former Super League side) in the last 16, before recording a 2-1 aggregate victory over the relatively impoverished FC Porto in the quarter-finals.

It’s a money old game, eh?

Don’t Miss

Snackmasters: Snickers, 9.00pm, Channel 4

This series is doing nothing to help me wean myself off various treats during lockdown. I'm starting to resemble one of the Fat Sweaty Coppers from The Fast Show. But if there was just one bar that I simply couldn’t live without, it would be Snickers.

So, here we are: Fred Sirieix sets two fine dining chefs the challenge of creating a perfect replica of the Snickers bar. I'll be taking notes, big time. And maybe the odd snack, too. I take this job seriously.

The combination of chocolate, peanuts, caramel and nougat may sound simple, but it proves to be a marathon (older Snickers fans should get that one) challenge for Tom Brown, who has his own restaurant in London's trendy Hackney Wick, and Sabrina Gidda, who runs the kitchen at the all-female members' club AllBright in Mayfair.

After weeks of trials and tribulations, the rivals cook their replicas from scratch for the factory bigwigs, who will choose the winner.

The Syndicate, 9.00pm, BBC One

In the penultimate episode of the current run, the gang have dognapped Frank's four-legged friend Duke, but soon realise it's not that easy sneaking an enormous Irish wolfhound past reception and up to their hotel room.

Frank is distraught to hear his dog has gone missing until he receives a phone call from Keeley, promising to return the pooch if he gives them back their winnings.

He will do anything for his dog - but Cheryl has other ideas. Meanwhile, Gemma is desperate to protect herself and her family from a sinister figure from the past.

New or Returning Shows

Cosc, 7.00pm, RTÉ One

In this season two opener, Garry Mac Donncha tells the story behind Radio Éireann's banning from the airwaves of Seven Drunken Nights by the Dubliners.

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If you're unfamiliar with it, the band's 1967 hit was a humorous ditty that told of a woman's affair under the nose of her drunkenly oblivious husband.

The tale of the song's success features John Sheahan, the Beatles and the Rolling Stones, Top of the Pops and an avant-garde British director.

Beyond the Elements, 7.50pm, PBS America

And now for something a little different: science writer David Pogue presents a three-part series that looks into the wonderful world of Chemistry.

First up, the chemical reactions that have transformed the world, such as one that enables the feeding of billions, yet when reversed is explosive.

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Plus, the lock-and-key molecules that put the heat in hot peppers or make deadly venoms useful to medicine.

Go on. Take a look. You'll learn a lot more here than going down rabbit holes on Facebook.

Inside Chernobyl's Mega Tomb, 10.00pm, BBC Four

Here’s a documentary following the construction of a 36,000 tonne steel structure to entomb the ruins of the nuclear power plant destroyed in the 1986 disaster.

A team of international engineers race to build the new steel structure, but radiation levels make it almost impossible for workers to build right on top of the old reactor.

The team face difficult challenges as they attempt to erect this new steel mega-structure and move it into place.

How to Build a Nuclear Submarine, 11pm, BBC Four

This is the story of the construction of HMS Astute, the Royal Navy's biggest and most powerful attack submarine, which cost more than £1billion and is able to circumnavigate the globe without surfacing.

The programme follows engineers, designers and skilled craftsmen as they work on the vessel, from the initial stages of production to its first journey into the open sea.

New to Stream

Fatma, Netflix

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This Turkish drama looks pretty good.

Fatma (35), an ordinary cleaning lady, commits an unexpected murder while searching for her missing husband, Zafer, who was just released from jail.

Zafer’s dodgy underground associates soon find out what she did, and the only way for her to survive in this man’s world is to continue killing.

She gets away with it too - since no one takes her to be more than an ordinary cleaner, she becomes an invisible killer.

In the end, murder becomes a release for the years of struggle and grief that she had repressed, and a new part of her identity she must confront.

Go! Go! Cory Carson: Season 4, Nertflix

Whether helping out his friends or making new ones with sister Chrissy, Cory is always on the move and ready for any adventure that comes his way!

Ending Tonight

Alias Grace, 10.30pm, TG4

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The ‘other’ Margaret Atwood adaptation comes to a conclusion.

In 1859, the committee, along with Simon, Grace, and Jerome DuPont begin the anticipated neuro-hypnosis experiment.

Once Grace is fully hypnotized and asleep, Mary Whitney's voice echoes from within her body, joyfully claiming to have possessed Grace on the day of the murders, and driving her to assist in the murders.

Completely unravelled, Simon evades the committee and flees to Toronto, where he joins the Union Army only to return home, heavily shell-shocked and concussed.

In 1872, Grace gets unexpected news and contemplates her future.

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