10) Sanderse,J - Helpmat in 4 
FIDE 1958
[W.G.Sanderse]

 1...f1B! [1...f1N? 2.Kd5 Ne7+ 3.Ke6 Nxf5 4.Kxf5 Nd2; 1...f1R?] 2.Kd5 Ne7+! [2...Bh3? 3.Ke6 Bxf5+ 4.Kxf5 Ne7+] 3.Ke6 Nxf5 4.Kxf5 Bxc4! 5.Bf3# 1-0

(11) Sanderse,J - Helpmat in 2
Dunaujvaros 1962
[W.G.Sanderse]

 1.Nexd7+ Kc7 2.Ne8# 1-0

(12) Sanderse,J - Helpmat in 2
Dunaujvaros 1962
[W.G.Sanderse]

 1.Nfxd7+ Ka7 2.Nc6# 1...Re7,Pc6 2.Re5-Pxd7 1-0

(13) Sanderse,J - Helpmat in 2
Holland-Israel 1962
[W.G.Sanderse]

 1.Kf5+ Kd3 2.Kg4# 1.Pf6,Kf5 2.Kd3,Kxf6 1...Kf4 2.Kd2,Kg3 1-0

(14) Sanderse,J - Helpmat in 3
Probleemblad III-1964
[W.G.Sanderse]

 1...Nc5 2.Kxf7 Nb7 3.Kxf6 Nd6 4.Be6# 1-0

(15) Sanderse,J - Helpmat in 2
Schach-Echo 1964
[W.G.Sanderse]

 1...Bg7 2.Qxd1-Kc3 3.Kd3# 1...Bf3 [1...Nce5 2.Nf3+ Kxe4 3.Rxb4#] 2.Be5+ Kxe4 3.Re2# 1-0

(16) Sanderse,J - Helpmat in 2 Duplex
Feenschach III-1964
[W.G.Sanderse]

 Helpmat in twee. Duplex. Zwart helpmat; 1.Ke8 , hxg8L 2.Te7 , bxc8Q Wit helpmat; 1.hxg8T, Th4 2.b8P, Te5 Allumwandlung *

 

(17) Sanderse,J - Helpmat in 2
Probleemblad 1964
[W.G.Sanderse]

 1...Rd6 2.Ka3 Bd5 3.Nd4# *

(18) Sanderse,J - Helpmat in 2
Probleemblad 1964
[W.G.Sanderse]

 1...Rd3 2.Kb1 Bc3 3.Bb3+ *