MathWorld News: There Are No Magic Knight's Tours on the Chessboard

Generalized knight's tours on rectangular chessboards - ScienceDirect

Can all the squares be covered with pawns in a standard size chessboard (e.g., eight-by-eight)? - Quora

Chess and Math: A Closer Look at the Knight's Tour

Solving the Knight's Tour on and off the Chess Board—Wolfram Blog

Can you Solve the Knight's Tour Math Problem?

Introducing Knight's Tours

Magic square - Wikipedia

Can all the squares be covered with pawns in a standard size chessboard (e.g., eight-by-eight)? - Quora

Knight's tour - Wikipedia

Introducing Knight's Tours

JF Ptak Science Books: Calculating

JF Ptak Science Books: Lines, History of

JF Ptak Science Books: A Beautiful Idea: the Knight's Magical Magic Square Tour (1888)

Chessboard Puzzles Part 3 - Knight's Tour