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# Tag Archives: Sudoku

## G. C. Steward lectures 2008

While I was uploading lecture notes, I also put on the page the notes from my G. C. Steward lectures at Gonville and Caius College in 2008. You can find them here. I spent the first half of 2008 in … Continue reading

Posted in history, Lecture notes, Neill Cameron artwork
Tagged automata, bagali polo, Euler, Latin squares, line graphs, magic squares, Moebius inversion, OEIS, On-line Encyclopedia of Integer Sequences, parking functions, partitions, root systems, statistics, Sudoku, synchronization, Tehran
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## Picture of an isomorphism

We spent a very busy and enjoyable weekend with Hans Hockey, a statistician who lives in Hamilton, and his family. When we arrived, Hans showed me a picture he had taken, of the 81 SET cards laid out on a … Continue reading

Posted in exposition
Tagged affine space, coordinates, Hans Hockey, isomorphism, Set, Sudoku
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## Futoshiki squares

Futoshiki is a puzzle in the spirit of sudoku, involving constructing a Latin square from some partial information, which can be found in some newspapers now, including the Saturday Guardian. Probably someone has looked at the mathematics of futoshiki, but … Continue reading

## Bluebells, 2

I didn’t give you enough information in the preceding post to find the grid reference to the bluebell wood. Here is some more, which should be more than enough. This is a part of the substitution table (rows and columns … Continue reading

Posted in exposition
Tagged frequency analysis, Latin square, one-time pad, substitution cipher, Sudoku
1 Comment