Acknowledgements We would like to thank Arthur Britto, Tim Hunt, Piotr Lakomy, Paul Leonard, Jean-Louis Martineau, Andreas Roever and Pierce Wetter for helpful correspondence. Thanks to everyone who stepped on a bug (and sent us a report)! Thanks to Gary Boos, Peter Gucwa, Martijn van der Kooij, Michael Margolis, Trevor Morris, Mans Ullerstam, Don Wagner and Yin Zheng for help with Visual C++. And thanks to Allan Crossman, Pierce Wetter, Stephan Somogyi and Mathias Wagner for help with Macintosh. Special thanks to Ebba Berggren for creating our logo, based on a design by Tanguy Urvoy and comments by Alan Crossman. The old GNU Go logo was adapted from Jamal Hannah's typing GNU: http://www.gnu.org/graphics/atypinggnu.html. Both logos can be found in doc/newlogo.* and doc/oldlogo.* We would like to thank Stuart Cracraft, Richard Stallman and Man Lung Li for their interest in making this program a part of GNU, William Shubert for writing CGoban and gmp.c, Rene Grothmann for Jago and Erik van Riper and his collaborators for NNGS.