I enjoy doing the puzzles in the newspapers I buy, both the numerical ones like Sudoku or Kakuro or the letter ones like Crosswords or the Code type where numbers stand for letters, though the latter aren't usually very tricky. In fact the puzzles provide the main reason that I buy papers at all these days.
By far and away my favourite crosswords are those composed hy Araucaria in the Guardian. Unfortunately the other composers in the Guardian never seem to reach the same standard. Not only are his clues always fair, so that once you have found a solution you can tell with reasonable certainty that you have found the correct solution, but he also covers a wide range of knowledge (which is often exhibited in themed puzzles) and is also often humorous.
It is annoying however when puzzles are misprinted, or mistakenly set, so that they have no solution or more than one. I wrote to the Radio Times last week to complain that in two recent issues their Mandali puzzle, which is a sort of maze, had two numerical solutions. They were kind enough to reply and apologise. Unfortunately the Mandali puzzle in this week's issue has at least six solutions! This is just carelessness.
The attraction I find in puzzles I think has to do with the fact that they are soluble problems. There are too many problems in real life that are insoluble and simply frustrating. The only viable approach to them I have concluded is step by step and little by little, and maybe a little amelioration can be achieved.
Friday, 25 September 2009
Tuesday, 22 September 2009
Cycling to Eastbourne
Friday, 18 September 2009
Autumn is Here
When I turned on my computer and activated the PCGuard I got a message "Rps: The parameter is incorrect" with no further explanation. Checking it on Google I was led to download a thing called RegistryBooster costing about £20. Whether this does any good remains to be seen. It claims to have cleared up a lot of errors in the Registry, but whether they are really significant or just listed to impress I don't know. Perhaps I shouldn't be so cynical.
Saturday, 12 September 2009
Knight's Tours Again
I've been making some progress in organising my files on Knight's Tours into publishable form. It is taking the form of a series of separate "Studies", each of about 60 pages, covering a particular topic. These are at present: History, Theory of moves, Leaper tours, Knight on 6x6 board, Knight on 8x8 board, Knight on other rectangular boards, Shaped and holey boards, Figured and magic tours. I should be able to make these available in PDF form, if not as a book.
We had two three or four-hour power cuts here over the past two weeks. The first one on Thursday 3rd September 5-8pm was without warning but the other on Friday 11th September 11am-3pm was notified by the electric company EDF. I took the opportunity to give my refrigerator a thorough defrosting and clean. Fortunately I had kept a supply of matches to light the gas, and have a supply of candles somewhere in case of emergency, but not needed on this occasion.
We had two three or four-hour power cuts here over the past two weeks. The first one on Thursday 3rd September 5-8pm was without warning but the other on Friday 11th September 11am-3pm was notified by the electric company EDF. I took the opportunity to give my refrigerator a thorough defrosting and clean. Fortunately I had kept a supply of matches to light the gas, and have a supply of candles somewhere in case of emergency, but not needed on this occasion.
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