Mate en 2
Spens, Walter Cook
1876
The English Chess Problem
Spens, Walter Cook
1876
The English Chess Problem
Retter, Josef & Grinblat, Arieh
1958
Al Hamishmar 17 I 1958
Zarch, Alexandr
1994
Latvijas Zeme, 1994
Kwiatkowski, Marek
1999
Probleemblad
Von Hellwig, Anna Maria
1934
Schach-Echo, 1934