Thursday 7th May 2026
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Oxford grads crack ‘impossible’ code over dinner

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Two Oxford graduate students solved a so-called “impossible” puzzle – while enjoying their dinner at a popular Oxford eatery.

Freshly refurbished Japanese chain-restaurant Wagamama challenged customers to solve a complicated cipher written on its window, in honour of Albert Einstein’s birthday last month.

Oxford students Klaudia Krawiecka and Vojtech Havlicek solved it in one night over some teriyaki chicken.

The puzzle required the students to decode a sequence of numbers into letters of the alphabet, then into three words related to Wagamama.

Krawiecka, a first-year graduate studying cybersecurity at Keble, told the Oxford Mail: “We were having dinner at Wagamama when we found out about the competition.

“We had some spare time while waiting for the food and decided to give it a shot as we both enjoy solving puzzles.”

Kraweicka and Havlicek, who is pursuing a DPhil in quantum computing at Keble, were undaunted, with Havlicek saying that solving puzzles is the pair’s “daily bread.”

“We solve riddles on a daily basis in both personal and professional lives.”

First, they employed frequency analysis, an information security technique involving analyzing how often certain letters or numbers crop up in a cipher.

Krawiecka told Cherwell they “initially assumed that the most popular numbers in the sequence would denote the most common letters in the English alphabet.”

This led to a dead end, however, as the sequence was too short to apply the technique.

However, they then decided to break down the numbers into their constituent prime numbers. After that move, they noticed that each of the numbers in the puzzle was made up of a distinct set of prime numbers, prompting them to translate them into binary.

From there, they went to the American Standard Code for Information Interchange (ASCII) table, a standardized table for encoding information, and checked which binary numbers corresponded to which letters.

The puzzle’s answer was ‘Wagamama Ramen Teppanyaki’.

Wagamama rewarded the pair’s efforts with a £500 voucher to its restaurants. Havlicek said: “We will be well fed for a while!”

Oxford sweet potato study unearths new discoveries

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An extensive study of sweet potato DNA led by Oxford scientists controversially suggests that sweet potato tuber evolved before humans.

The results support that the sweet potato, a plant of American origin, likely arrived in Polynesia due to the natural dispersal of its seeds – challenging the long-standing view that the widely-used tuber was transported by humans in pre-European times.

Pablo Muñoz-Rodríguez, a DPhil candidate at the Oxford Department of Plant Sciences, was a member of the sweet potato research team, which conducted the biggest survey of sweet potato DNA yet.

Muñoz-Rodríguez told Cherwell: “This finding calls into question the alleged contacts between Polynesians and Americans in pre-European times, because sweet potato was the only remaining biological evidence of these contacts.

“This finding is likely to be controversial because it contradicts predominant theories that suggest ancient contacts between both sides of the Pacific Ocean.

“However, the molecular results we present are robust and have been thoroughly tested; we are confident they are accurate and therefore there is strong evidence against human-mediated transport of the sweet potato to Polynesia in ancient times.”

Muñoz-Rodríguez says he and his team plan to continue their sweet potato research.

“There is one other question pertaining to the origin of the sweet potato that remains unresolved, and that will be the focus of our research now: what was the evolutionary path that led from the wild species to the sweet potato?”

Men who fail to equal parents’ academic achievements ‘suffer mental distress’

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Not living up to their parents’ educational achievements can be as distressing to men as having a divorce, according to a study by Oxford’s Department of Social policy and Intervention.

The study found failing to meet parents’ academic achievements had “no observed effect” on women’s mental health.

Findings presented at the British Sociological Association’s annual conference last week showed that men failing to reach or exceed their parents’ academic achievements have higher chances of being subject to “psychological distress”.

Researchers considered factors such as loneliness, insomnia, and dissatisfaction with life when ranking participants by psychological distress.

Dr. Alexi Gugushvili, research fellow at Oxford and head of the study, told the BBC: “For men, parents’ educational achievement and inter-generational mobility retain an important influence on their psychological health.

“Getting a higher educational achievement than one’s parents is associated with a reduced level of psychological distress, even after the direct effect of individuals’ and their parents’ education and other conventional explanations of distress are accounted for.

“On the contrary, falling short of one’s parents’ education tends to raise the distress level, and a big disparity is especially harmful for men’s psychological health status.’
Participants and their parents were ranked into three groups based on their levels of education.”

The study found that men in the lowest group with parents in the top were over twice as likely to be in the top 10% of psychologically distressed participants.

Similarly, men with middling educational achievement whose parents were top achievers were 75% more likely to be psychologically distressed than those whose level was the same as their parents.

Meanwhile, men in the highest group with parents in the lowest were half as likely to be distressed psychologically.

The researchers speculated that the disparity between men’s and women’s levels of distress may be due to different ways of measuring success.

Gugushvili told the BBC: “The reason for this could be that men are more likely than women to attribute success and failure by pointing to their own merits, abilities and effort, rather than factors they have no control over.”

This finding is based on data collated from individuals from 27 European countries with 50,000 participants from the UK.

New crowd-management measures introduced for May Morning

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Oxford City Council have announced a new crowd management system for May Morning, set to be implemented this year.

A record-breaking 27,000 people descended on the city last year, with large numbers congregating on the High Street and Magdalen Bridge.

To help with manage these large crowds, one-way channels will be put in place along Magdalen Bridge, in order to allow people to move easily during and after the event. There will also be stewards and signs in place, while bicycles will not be allowed to cross the bridge.

The new strategy comes after reports of a ‘crush’ at last year’s May Morning, when a gridlock occurred on Magdalen Bridge as people tried to leave.

According to the Council, this was due to people leaving the bridge towards East Oxford being met by “an unusually high number of people wanting to come into the city from the Plain Roundabout”.

The Council hopes that the one-way channels, as part of the new crowd management system, will ensure that this problem will not happen again.

Paula Redway, Oxford City Council’s cultural development manager, said: “We take crowd safety incredibly seriously and, following last year’s May Morning, the City Council and event partners have been working hard to make sure that the crowd problems are not repeated.

“Magdalen Bridge will look different during this year’s event, with signs, barriers and stewards directing people to keep the crowd flowing on the bridge. We ask that those wishing to attend make themselves aware of the new plans and follow instructions on the day.”

Demand also looks set to be high for other May Day events in Oxford, with special all-night club events at The Bullingdon and O2 Academy selling out months in advance.

Life Divided: Formal or Normal?

Formals: Julia Alsop

There’s nothing that feels more Oxford than donning a gown, grabbing a bottle of wine (second cheapest is far classier than the cheapest, right?), and making your way to an ornate hall for a formal meal that cost you a maintenance loan-friendly £5.

Sure, it may be ridiculous. Sure, it may be an archaic tradition. But even the haters among you have a soft spot for it. It’s one of the peculiarities of Oxford life: it’s a privilege that makes up for the intensity of eight-week terms and the pain that is fifth week. And sometimes, even students who live off pesto pasta need a touch of decadence to feel human.

Obviously, some colleges are better renowned for gastronomical pursuits than others. But wherever you go, your college hall is your space – somewhere you have worked your arse off to get to (and still do), and, as such, get to enjoy the space with friends, good food, and a decent bottle of wine.

Trust me, I have come to appreciate this all the more, since my beloved hall, at Worcester College, has been out of action for the duration of Michaelmas and Hilary for renovation. Going to formal at other colleges is great, but the real joy of formal is really down to enjoying your college and the people in your college community.

Oxford traditions are innately a bit stupid – you either love them or hate them: sub fusc for one (even the name is outmoded), matriculation, trashing. But, in my opinion, formal hall is probably one of the most wholesome ones.

When you spend so much of your time in college having essay crises, what is better than to get to enjoy your environment, to appreciate the wonderful architecture, and to have conversations that help build the memories of your days of Oxford?

Not Formals: Lara Scheibli

To most people formals mean good(ish) food and a chance to have a pleasant evening in the company of friends.

However, what many do not consider is the ways in which formals can perpetuate an image of Oxford that might deter those from already underrepresented backgrounds from applying.

There is already a widespread belief that Oxford is for the posh, privileged and privately educated. We foster this view further with extravagancies such as frequent formal dinners. Many applicants do not know anyone who attends Oxford, and they therefore rely on hearsay to build up and understanding of the University. If you hear about these events and already have a preconception of Oxford, you may well think twice about applying here.

Of course, there are lots of programmes which do great work in ensuring that more people from all kinds of backgrounds apply to Oxford. However, making the University a little less “traditional” by reconsidering formals and other associated traditions could help the wider access problem further. It is no coincidence that those colleges which are regarded as less traditional tend to have higher percentages of state school students.

On a wider societal level, formal dinners also reinforce the obsolete British class system. They support the ultimate smugness of Oxford students seeing themselves as in some way just “better” than others. It seems like we should all learn to recognise that there are lots of intelligent and deserving people who do not go to prestigious universities, either by choice or chance.

Formal dinners just highlight the existing social privilege of many Oxford students. We should therefore rethink their place at the University in the 21st century, and whether we might be better off without them.

Merton beat Newcastle to reach University Challenge final

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Merton College have reached the final of University Challenge after beating Newcastle University 215-110.

They will contest Monday’s final against St John’s College, Cambridge, who thrashed the University of Edinburgh in their semi-final clash last week.

Merton have won the competition once before, when they beat a Queens’ College, Cambridge team – which included Stephen Fry – in the final of the 1980 edition.

The team have won all of their fixtures in this year’s competition, and were the highest-scoring team in the first round when they scored 285 points in their thrashing of King’s College, London.

Team captain and second-year Physics student Leonie Woodland particularly impressed during Monday night’s semi-final.

The rest of the team is made up of: Edward Thomas (History, now graduated), Alex Peplow (History, postgraduate), and Akira Wiberg (Molecular & Cellular Medicine, postgraduate).

This is the first year that Merton have had a team on the show since 2011, despite the college’s reputation for academic excellence.

This is the fifth year in a row that an Oxford college has made the final of the competition.

It is also the fifth consecutive final that will be contested between one Oxford college and one Cambridge college.

Last year’s final was won by Balliol College, who made headlines after refusing an interview with the Daily Mail, which they labelled a “fascist rag”.

[irp posts=”98983″ name=”Balliol’s University Challenge victors boycott Daily Mail”]

The show has also come under the spotlight in the past few years due to the lack of female students featuring in the latter stages of the competition.

Last year, St Hugh’s College was criticised for fielding an all-male team. Critics asked why a formerly-all-female college had chosen a team featuring four men.

In November, Wadham decided to enforce a gender quota for its entry into this year’s competition.

Oxford professor faces fourth rape complaint

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A Swiss woman has filed a criminal complaint for rape against Oxford scholar Tariq Ramadan, who is already being held in custody in France over similar charges.

The allegation by the unnamed woman relates to an alleged incident in Geneva in October 2008. The woman was about 40 at the time.

“At this stage of the procedure, I can confirm that we have filed a criminal complaint,” her lawyer, Romain Jordan, told Radio Télévision Suisse on Friday night. “The complaint puts forward facts that may amount to rape with aggravated circumstances.”

The news follows Ramadan’s detention in France in February on charges that he raped two women. A third woman has since accused the professor of rape.

Ramadan denies all charges, having suggested they may be part of a smear campaign against him.

A professor of contemporary Islamic studies at St Antony’s College, Ramadan took a leave of absence in November, which the University said was “to address the extremely serious allegations made against him”.

Oxford-Cambridge Expressway a threat to rare species, RSPB says

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A proposed new dual carriageway which will run between Oxford and Cambridge has been criticised for the potential damage it would cause to a local nature reserve.

The RSPB has said that the expressway would pose a serious threat to the Otmoor Nature Reserve and its wetlands.

Calling the proposed route a “disastrous outcome for nature”, a spokesperson for the RSPB has explained that certain species of bat, butterfly and wetland bird could be endangered by the large road.

Bechstein’s bats are one of the rarest and endangered species in the UK – an estimated 1,000 bats populate areas in the south of England – and black hairstreaks are one of the rarest butterflies in the UK. Both species could be put under threat.

The threatened black hairstreak butterfly, which live in their thousands in the south of England

A campaign group, the “Expressway Action Group”, has been set up by Oxfordshire residents to protest the damage that the route could have on the area’s green belt.

The group is supported by 34 Oxfordshire parish councils and has put signs up along the proposed route reading slogans such as “Green belt not commuter belt” and “Trees not tarmac”.

The Expressway is a proposed new road which would run from the A34 to the A14, near Cambridge, running via Milton Keynes. It is hoped that it would complete the missing link between the M1 and the M40.

The National Infrastructure Commission (NIC) gave cause for its construction in 2016 after producing a study on the Cambridge-Milton Keynes-Oxford corridor.

The government has identified the corridor as one of the most significant areas of growth in the country. It is hoped that the construction of the road will contribute to the growth of housing and employment.

The NIC, in its “partnering for prosperity” report, described the three major areas of this development as being some of the “fastest growing, innovative, and productive” locations in the UK.

However, they explain that, at the current time, “poor east-west connectivity” is leading to “restricted interaction between these economies”, and further economic growth is threatened by journey times, congestion and housing unaffordability.

Housing Secretary Sajid Javid is expected to approve the creation of up to five new towns along this route in the coming weeks after discussing the proposal in The Sunday Times in March.

Stakeholders are currently being consulted by Highways England, on behalf of the Department for Transport, to gain opinions about which “corridor” between the two university towns is the most preferred.

Salt ‘n’ Sauce Review: Far from a seaside chippy

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An indoor food court next to an indoor crazy golf course sounds like a childhood nightmare: a place to host a tenth birthday rather than to host an “elevated and dynamic revolution” of a staple of British food.

And in many ways, Salt ‘n’ Sauce’s description of itself as an innovative take on a chippy is bizarre. Of course, it has the basic ingredients. But while there is batter aplenty, smooth and creamy mushy peas, and thick-cut chips, the restaurant is not an archetypal chip shop.

Indeed, as I tuck into my squid burger, lathered with spicy harissa mayo, and wash it down with a craft lager, I can’t help feeling that this experience can’t be any further from the greasy chippies of the South Coast.

But I do not mean this as a bad thing: the burger is excellent. The squid – lightly dipped in salt-and-pepper tempura flour – has been prepared to perfection by a London-trained chef, and the flavour combination is ambitious, but manages to work.

My date for the evening bites into his vegan fried ‘fish’ – actually beer-battered tofu wrapped in seaweed. He agrees: to compare this to a chippy is to compare a high-end brunch spot to a greasy spoon cafe. They are different places, both with their own merits.

Sadly, Salt ‘n’ Sauce does commit one cardinal sin. In my book, incorrectly labelling a portion of fries by calling them ‘chips’ is an almost unforgivable error. In fact, it is made even worse as I look across at Fred, and see his glee as he devours a fatty, indulgent chip butty – including proper chips!

However, my disappointment at the mislabelling is atoned for by the sauces on offer. The tartare sauce is salty and sour, as it should be. It is the kimchi mayo that particularly impresses – spicy, as promised, full-flavoured, and creamy.

And it also sums Salt ‘n’ Sauce up well: a restaurant that started life out as a pop-up in London, and is trying to provide its own spin on a chippy.

But in reality, it is much more high-end than that.

It is fast food, but only in the way that Pret is – it cares much more about flavour and innovation than it does about speed.

The Bill

Vegan Fried Fish – £6.75
Tempura Squid Burger – £8.50
Ultimate Chip Butty – £5.50
Chips ‘n’ Cheese – £3.50
Skinny Fries – £2.25
Mushy Peas – £1.50
Homemade Tartare Sauce – £1.50
Kimchi Mayo – £1.00
2x Schiehallion Lager – £9.50

Total: £40.00

Reversed: A Memoir

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Nicholas Letchford completed his doctorate in mathematics last year from Oxford University on a full international scholarship. Unknown to his colleagues, Nicholas had been diagnosed with severe learning disabilities as a child, and now his mother, a passionate advocate and teacher for children with reading difficulties, has written a book about his struggles through the education system.

The path from being described as “the worst child I have seen in twenty years” by his school counsellor to an Oxford graduate was not a smooth one. The story takes place in Australia, the UK and the US, since his family moved about. The book makes clear that “learning disabilities are for life,” and even alludes to the challenges he encountered while a student at Oxford. Many of the events recounted are dire and Nicholas himself has avoided reading the whole book. Speaking to me, Nicholas said: “I don’t relate much with that time period. It is almost like the book is about another person.” He says he remembers being stressed a lot during his childhood and has avoided reading the book so as not to relive some painful memories.

After a dismal first year of school in Australia and being tested in WISC of having a low IQ, in the ‘borderline’ category, 6-year-old Nicholas was dismissed by his teachers as pointless to teach. His mother took his education into her own hands, particularly his struggle with reading. Through fun learning games and with a lot of practice, Nicholas finally learnt to read. In the meantime, his parents tried a variety of interventions, some of which turned out to be bogus, such as physical exercises that were meant to help with reading.

One of the striking points the memoir illustrates is the level of abuse children with learning disabilities face, from teachers and others. This was something Lois, Nicholas’s mother, could relate to, herself having struggled to learn to read as a child. After recounting suspicions that Nicholas had been shouted at by his first-year teacher on a regular basis, she recalls an incident from her own schooldays in which she was berated by a teacher for an assignment she handed in. It becomes apparent quite soon that the memoir is as much about the author as it is about Nicholas. Being able to relate helped her to diagnose stumbling blocks and develop strategies to teach reading.

After teaching Nicholas to read, Lois, already qualified as a physical education teacher, retrained specialising in literacy. She was shocked to find the techniques she discovered teaching Nicholas were already prescribed in the academic literature – shocked that these insights had no bearing on classroom practice nor were being implemented even by special education teachers. In the book Lois describes in detail her teaching methods with her students in the USA. She laments the waste of time and resources, when some students after several years of schooling can barely recognise a few words, because the teachers do not use the appropriate methods for such students.

Speaking to me, Lois says that she doesn’t want to accuse teachers, since that will make them defensive. Rather, she would like to see a change of attitude. Instead of labelling some students as being stupid or incapable, she would like teachers to think of ‘what can they do to change things’. In the book, while some teachers encouraged Nicholas and his mother’s efforts, some clearly did not. After Nicholas learnt to read and began to do well in his studies he moved to a new junior-high school in Texas. In his first day, because he struggled to follow some instructions due to his difficulties, in front of the whole class, his pre-Advance Placement math teacher tore up his work and suggested he quit that subject, saying he was not capable of doing it. The incident was humiliating and painful for many years to come. Raising awareness of the difficulties such students face may help avoid similar events in the future.

The memoir Reversed is now out and will be invaluable reading for those interested in special education, particularly teachers and parents.

https://www.amazon.co.uk/Reversed-Memoir-Mrs-Lois-Letchford/dp/1947392042/