Jan Hartong
Probleemblad 1957
5n1n/5kPR/5PR1/2N5/2N1K3/8/B7/8

1.Pd7! tempo

1…Pf~,Kxg6 2.g8D#

1…Pfxg6,Phxg6 2.Pd6#

1…Ke8 2.gxf8D#

1…Ke6 2.gxf8P#

1…Kg8 2.gxh8D#
Wit geeft mat in 2 zetten