Sudoku23 Nov 2019 11:20
My lovely wife was fantastically quick at doing the most difficult Sodoku.
It really peeved me that with my mathematical background, I couldn't match her.
She bought Carol Vorderman's book and chucked it in the bin!
I asked why and she said , Carol says to use a pencil and a rubber! You can write them in with 100% confidence they are right!
I was a snob about them because I thought along Carol's lines!
Liz showed me how she does them and bloody hell she was right.
I try to crack https://www.sudokukingdom.com/ (very hard level) in 30 minutes, but my missus would never compete with me on them. When I got stuck , sometimes for 30 minutes on one move , she'd look and within a couple of minutes she'd say that square is a number, and the whole thing would drop out in a few minutes.
Today, I twigged the bit of the jigsaw I was missing and did one in 13 minutes.
It was difficult to get even one square and then I saw how!
Explaining all the logical processes is very tricky but this was her trick I'm sure.
Very simply, it combines two or more of the logical steps together , her main logic was to discover what must be in a line, irrespective of the order! Then look in the empty squares knowing none of them are possible. I got that quickly. But I only solved puzzles which obliged with single logical steps (about a third of them).
Today, One rule defined two squares of 3 to be a 4 and 8 , but not which was in where.
A second rule showed there must be a 1 in those 3 too!
Rule out 1 4 and 8 from the other empty cells in that block and sometimes, like today, it will be bingo! I am so proud of her - she kept reminding me of pre-historic time when I said Sudoku is not logical. They most certainly are. I hope she is looking down on me, because she knew it bugged me how fast she was, and we are talking years!
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