Five Hundred and One Opening Problems
A Kiseido publishing book by Richard Bozulich and Rob van Zeijst, volume 1 in the Mastering the Basics series.
ISBN 4-906574-71-8
Each problem in this volume is accompanied by a go proverb that serves as a hint as the correct direction of play. Although this is unusual in English language problem books, this is a common practice in Asian books. To use the book effectively, it is very important to cover the hint that accompanies each problem. The hint provides a clear path to the solution.
See also David Carlton's review
Errata.
Problem 30 is discussed at BQM205.
Examples
Push back the border of your opponent's territory while expanding your own! Where should Black play?
This position arose in the 1971 Honinbo League between Fujisawa Shuko (white) and Ishida Yoshio. Fujisawa's move prevented Black from linking up his stones and gave White thickness in the fighting to come. Where do you think White played? (This game is throughly analyzed in The 1971 Honinbo Tournament published by Kiseido.)
(The answer is a canonical example of this play.)