Doug Chatham
Associate Professor of Mathematics
Miscellaneous Links
Some websites I've contributed to:
- The N + k Queens Problem Page: Introduction to the problem of placing more than N queens on an N-by-N board --- with the help of a few pawns.
- KYMAA Home Page: I'm the newsletter editor and webmaster for the Kentucky Section of the Mathematical Association of America.
- The On-Line Encyclopedia of Integer Sequences: large searchable collection of sequences. I've contributed some sequences:
- A103330: the number of ways to place n+1 Queens and a Pawn on an n x n chessboard so that the Queens do not attack each other
- A103331: like the previous sequence, except symmetric solutions count only once
- A129551: the number of ways to place n+2 Queens and 2 Pawns on an n x n chessboard so that the Queens do not attack each other
- A129552: like the previous sequence, except symmetric solutions count only once
- A129553: the number of ways to place n+3 Queens and 3 Pawns on an n x n chessboard so that the Queens do not attack each other
- A129554: like the previous sequence, except symmetric solutions count only once
- The Chess Variant Pages : a huge collection of chess-like games. Some of these are my inventions, including
- Nomic.net : a site dedicated to Nomic, a game invented by Peter Suber where each move includes an attempt to change the rules (unless that aspect of the game rules is changed). I used to maintain the Nomic Bulletin Board, a forum for discussion of Nomic-related issues.
Some other websites of interest to me:
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commalg.org : web site for the commutative algebra community
