Johannes Kohtz (* 18th July 1843 in Elbing; † 5th October 1918) and Carl Kockelkorn (* 26. November 1843 in Köln; † 16. Juli 1914 in Köln), German chess composers and players
Unknown author<span style="display: none;">Unknown author</span>
before 1875 <div style="display: none;">date QS:P,+1875-00-00T00:00:00Z/7,P1326,+1875-00-00T00:00:00Z/9</div>
Illustrirte Zeitung, Leipzig, 1875-01-02, page 18