This morning I discovered the Miracle Sudoku – so the chances of my getting anything else done today went out of the window.

I’m fairly obsessive about sudoku, my current favourites being the killer variety. I usually do one in the newspaper over lunch, plus another couple on an app in the evening before going to bed.

But the Miracle Sudoku is something else, as you can see from the image. It contains exactly two numbers, so is unsolvable as it stands, of course. The point is that three extra rules are introduced to the normal sudoku rules. These are:

1. Anti-knight rule: No two squares that are a knight’s move apart may contain the same number.
2. Anti-king rule: No two touching squares (vertically, horizontally or diagonally) may contain the same number.
3. Non-consecutive rule: No two squares that are horizontally or vertically adjacent may have consecutive numbers.

If you want to have a go you can download a printable version of the Miracle Sudoku above, together with a couple of practice ones. Be warned – you will need to print several copies!

In the process I have come across Cracking the Cryptic – a YouTube channel devoted to solving the Times cryptic crossword and sudoku.  It is run by two experts: Mark Goodliffe and Simon Anthony, who have both represented the UK in the World Puzzle and World Sudoku Championships – no, I didn’t know either.

On 10th May Simon Anthony was presented with the Miracle Sudoku for the first time and solved it live in around 20 minutes. (Spoiler alert: demonstrates the solution!)

As I write, at around 12 midday, I have managed to fill in all the 1s, 2s and 3s, and I promise I haven’t watched the video yet. I really must get dressed and clean the bathroom. Updates to follow.

I haven’t been commenting much on the news of the day in my diary – which is rather odd, given the way I usually closely follow political comings and goings.

Whilst living in this bubble of safety in my home, I have been very carefully controlling the impact of external information on my equilibrium. I do read a newspaper very day – we still have one delivered – I watch the BBC news throughout the day and usually catch up on the No 10 briefing, so I’m not missing out on much. But the unending tales of death and suffering are sometimes too much to bear, especially when there is little I can do to help, so I do ration them.

In the same way, I avoid joining in the blame game. People are understandably angry, and looking for someone to blame, hence those mad conspiracy theories. But what matters to me, here and now, is to keep us safe, both physically and mentally. I can do nothing about the causes of the situation that we are in, but I can make our enforced isolation work for us.

Eventually, with hindsight, as a nation we will get a better handle on how, when and why the decisions were made to combat the pandemic. But a couple of articles in the Guardian this week have raised some interesting points about the way the UK has dealt with the crisis.

On Tuesday George Monbiot pointed out:

We have been told repeatedly that the UK was unprepared for this pandemic. This is untrue. The UK was prepared, but then it de-prepared. Last year, the Global Health Security Index ranked this nation second in the world for pandemic readiness, while the US was first.

Today David Pegg follows that thread to suggest that although the UK was ready for a pandemic, it was ready for the wrong disease. He summarises how, under Tony Blair, the Government identified and prepared for a number of different potential civil emergencies.

Within its first year the unit drew up the national risk register, a comprehensive catalogue of all the civil emergencies that could conceivably strike the UK, which continues to be updated annually. At the top of the list – then and now – was an influenza pandemic.

A few weeks ago I was standing at the ironing board thinking “Why?”

Yes, why do we iron things? According to this history of ironing, the Chinese were doing it over 2000 years ago, using pans filled with hot water. Proper irons – made of the metal – were first use in the 17th century. The electric iron was invented in the 1880s and the steam iron in the 1920s. According to Wikipedia:

In the case of cotton fibres, which are derivatives of cellulose, the hydroxyl groups that crosslink the cellulose polymer chains are reformed at high temperatures, and become somewhat “locked in place” upon cooling the item.

So that is when and how, but it still doesn’t explain why.

I do remember once calling in on a neighbour and finding her busy ironing underpants and J-cloths. My little quirk is to iron pillowcases. I don’t bother with sheets and duvet covers, but I rather like the sensation of lying down on a newly washed and ironed pillowcase. I also iron some of my smarter tops and trousers. Maybe between us we have found the reasons. Ironing gives a sense of control over a chaotic world, it makes some items feel better against the skin, and it gives the impression that we care about our appearance. And that’s about it.

After that epiphany, I decided that I would do no more ironing while in isolation. Of course, I have been slobbing around for most of the time in casual things, most of which I don’t usually iron anyway.