Acknowledgments

We are indebted to everyone who has been involved in making this book and scalapuzzlers.com happen, whether by providing the original sources for puzzlers, through comments or suggestions, or simply by spreading the word.

Sincere thanks go to our editors Jessica Kerr, Bill Venners and Theresa Gonzalez for their probing and thoughtful reviews, and to Darlene Wallach and George Berger for their help in layout and adapting the publishing system to handle the puzzlers.

We would especially like to thank all contributors to scalapuzzlers.com: Dominik Gruntz, A. P. Marki, Simon Schäfer, Konstantine Golikov, Seth Tisue, Daniel C. Sobral, Luc Bourlier, Vassil Dichev and Andraž Bajt. Your submissions have provided the basis and inspiration for this book.

We would also like to express our gratitude to the following readers who spotted errors or suggested improvements: Cay Horstmann, Harish Hurchurn, Marcin Kubala, Edward G Prentice, Alex Varju and, in particular, Dominik Gruntz, for his thorough review and the many useful suggestions he contributed.