The authors Kohtz, Kockelkorn and Holzhausen are authoritative leaders of the "New German School" in chess problem solving. The starting point of this school was the Indian problem by Reverend Loveday, which they enriched with new ideas and improved in many ways. Kohtz and Kockelkorn developed common logical problems, e.g. the Roman idea. "Their monograph 'Indian Problem' was grandiose" (Großes Schachlexikon) and is indispensable for any chess friend who wants to deal with chess problems.
