Programs to Play Twixt - Collection of information on game playing programs. Also features T1. - http://www.johannes-schwagereit.de/Twixt.html
MindZine: TwixT and Quarter-board - By David Bush. Introduction and course in basic game strategy. - http://www.msoworld.com/mindzine/news/proprietary/twixt/twixt1.html
Mark Thompson's Twixt page - Printable board diagram, brief history of the game, suggested variant, links. - http://www.flash.net/~markthom/html/twixt.html
Uncrossed Knight Paths is NP-complete - Draft of a paper by Dominic Mazzoni and Kevin Watkins proving that finding paths in Twixt (i.e., whether it is still possible to win) is NP-complete. - http://www.mathematik.uni-bielefeld.de/~sillke/PROBLEMS/Twixt_Proof_Draft