Finndler's Tornado21 Information on gold rush and meta rush strategies for Tornado21. http://www.geocities.com/tornadogold/

Yahoo! Games - Tornado21 Rules Game rules. http://games.yahoo.com/games/rules/tornado21/rules.html?page=t21

Kings Corners Game rules and variations. http://www.pagat.com/domino/kingscorners.html